Minicolloquia

Proposer	Title
Biophysics and medical applications of physics
Paolo Mariani	The G-quadruplexes, beyond biology
Proposers Paolo Mariani (Dip. Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche), Alessandro Paciaroni (Dip Fisica e Geologia, Università di Perugia), Antonio Randazzo (Università di Napoli) Abstract Nucleic acids are prone to structural polymorphism: in addition to the well-known double helix, a number of alternative structures may be formed. However, most non-canonical conformations are stable only under non-physiological conditions and have been considered as simple curiosities. Among these oddities, a family of nucleic acid secondary structures known as G-quadruplexes (G4) has emerged as more than a novelty. These structures can be formed by certain guanine-rich sequences as well as by GMP in aqueous solution and are very stable. G-quadruplexes have been recognised to be biologically relevant, but they could also be used for various applications that are disconnected from cells. DNA is an attractive material for nanotechnologies because of its self-assembly properties. The ability of nucleic acids to self-assemble into a variety of nanostructures and nanomachines is being exploited by a growing number of researchers. Extremely sophisticated structures and nanodevices may be constructed with DNA as well as with G-quadruplexes. Such nanostructures offer interesting new possibilities in bionanotechnologies. References
Antonella Battisti	50 years of SIBPA: a journey through the molecules of life
Proposers Antonella Battisti (CNR - Istituto Nanoscienze and SIBPA), Massimo Vassalli (University of Glasgow) Abstract The Italian Society for Pure and Applied Biophysics (SIBPA) is a scientific association founded in 1973 with the aim to gather Italian scientists with a common interest in the then emerging field of biophysics. Nowadays it represents the Italian biophysics in Europe and in the world. This year marks the fifty-year anniversary of the birth of the society, whose purpose during these five decades has been the promotion of biophysics research and its dissemination, with a constant support to educational and updating initiatives and to the establishment of collaborations between laboratories thanks to the organization of schools, meetings, events, conferences and to the provision of awards for young and deserving biophysics researchers. The society interests include molecular, cellular and tissue biophysics, applied biophysics, intracellular imaging and sensing, theoretical and computational methods, nanobiophysics and advanced microscopy techniques. The celebration of the 50th anniversary of SIBPA is a chance to take a journey into the molecules of life through the latest discoveries whose seeds, sown by pioneer biophysicists, are now bearing their fruits. References
Tatjana Skrbic	Data Driven versus Coarse-Grained approaches in Protein Folding: where are we and where are we going?
Proposers Tatjana Skrbic (Ca' Foscari University of Venice, Venice, Italy), Achille Giacometti (Ca' Foscari University of Venice, Venice, Italy), Amos Maritan (University of Padua, Padua, Italy), Jayanth Banavar (University of Oregon, Eugene, USA) Abstract Proteins, the amazing molecular machines of life, are complex with myriad degrees of freedom. Linus Pauling [1] launched the field of molecular biology by developing the principles of quantum chemistry and applying them to predict the structures of protein modular building blocks, helices and strands assembled into sheets. Polymer physics, however, provides a very sound framework to study protein behavior using a coarse-grained approach, as it was shown by Flory and others [2], ever since the very beginning of the protein folding problem. All theoretical coarse-grained models deftly avoid the use of quantum chemistry, in the attempt to distill out the essential ingredients thus underscoring the consilience in the fit of chemistry and biology to the dictates of mathematics and physics. By contrast, the recent remarkable achievement by AlphaFold [3] in the challenging 14th Critical Assessment of protein Structure Prediction (CASP14) that outperformed all alternative approaches in the prediction of the native state given the sequence, has brought in the limelight the power of data-driven approaches hinging on artificial intelligence/machine learning techniques. Not surprisingly, Science has nominated this as a 2021 breakthrough of the year [4]. However, predicting the fold does not mean understanding the folding mechanism, and this has stirred significant discussion within the scientific community, especially of the fact that a definite answer on this point will come only by combining the power of data-driven approaches with well conceived coarse-grained models [5]. The aim of this MiniColloquium is to present the state-of-the-art understanding of where we stand, as well as to indicate the future directions in this field, by gathering together different experts in the two techniques and foster a scientific discussion as well as collaboration between the two communities that eventually will reconcile these two approaches. The structure of the MiniColloquium is then envisaged as follows. After a first introductory statement by the Chair, partially invited and partially selected contributions from the two different approaches will be scheduled, and a final round table discussion will take place that might pave the way toward this reconciliation. References [1] L. Pauling, R. B. Corey, and H. R. Branson, “The structure of Proteins: Two hydrogen-bonded helical configurations of the polypeptide chain”, Proc. Natl. Acad. Sci. USA 37, 205 (1951), DOI: https://doi.org/10.1073/pnas.37.4.205; L. Pauling and R. B. Corey, “Configurations of polypeptide chains with favored orientations around single bonds: two new pleated sheets”, Proc. Natl. Acad. Sci. USA 37, 729 (1951), DOI: https://doi.org/10.1073/pnas.37.11.729 [2] P.J. Flory, “Statistical Mechanics of Chain Molecules”, John Wiley & Sons (1969) [3] J. Jumper et al., “Highly accurate protein structure prediction with AlphaFold”, Nature 596, 583 (2021). [4] H. H. Thorp, “Proteins, proteins everywhere”, Science 374, 1415 (2021), doi: https://www.science.org/doi/10.1126/science.abn5795 [5] P. Moore et al,”The protein folding problem: Not yet solved”, Science 375, 507 (2022), doi: https://www.science.org/doi/10.1126/science.abn9422 ; S.J. Chen et al, “Protein folds vs. protein Folding: Differing questions, different challenges”, Proc. Natl. Acad. Sci. USA 120, e2214423119 (2023), doi: https://doi.org/10.1073/pnas.2214423119"
Nenad Pavin	Mechanobiology of cell division and transport
Proposers Nenad Pavin (Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia), Iva Tolić (Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia), Gaia Pigino (Human Technopole, Palazzo Italia, Viale Rita Levi‑Montalcini, 1 20157 Milan, Italy) Abstract The complex inner workings of living cells present a formidable challenge to physicists, requiring interdisciplinary approaches combining theory and experimentation. With a typical size of tens of micrometers, a living cell is a highly sophisticated system relying on constant remodeling to self-organize its own interior, precisely and efficiently to ensure its survival. Many of the cellular processes involve filaments of the cytoskeleton and molecular motors, which exert forces by moving along the filaments. While the functioning of molecular motors and their interactions with filaments have been well characterized by now, how they work collectively to sustain the cell’s vital processes is not yet understood. One prominent example of self-organization is the mitotic spindle, an assembly of microtubules made to separate the chromosomes during cell division, where mechanobiological approaches have allowed to address important questions of how the mitotic spindle is functioning. This mini-colloquium will focus on recent research, involving experiments and theory in this area at the interface between physics and biology. It will be of particular interest to physicists working on biological systems or soft condensed matter, as well as anyone curious about the intersection of these disciplines. References
Giulia Maffeis	Diffuse optical spectroscopy for biological tissues
Proposers Giulia Maffeis (Dipartimento di Fisica, Politecnico di Milano, Milano, Italy), Caterina Amendola (Dipartimento di Fisica, Politecnico di Milano, Milano, Italy), Nikhitha Mule (Radiologia Senologica, Ospedale San Raffaele, Milano, Italy), Marta Zanoletti (ICFO-Institut de Ciències Fotòniques, Castelldefels, Barcelona, Spain) Abstract Structure and composition translate into morphology and physiology when the material at exam is a biological tissue. The knowledge of such information is invaluable for a thorough diagnosis in clinical settings. For example, exams for cancer detection, therapy monitoring, stroke and haemorrhages diagnosis, brain and muscular oxygenation tracking occur on a daily basis. However, current diagnostic and prognostic tools do not offer at the same time non-invasive, bed-side, quantitative assessment of the tissue health, independently of the operator and at relatively low costs. Diffuse Optical Spectroscopy (DOS) hold vast potential in meeting these clinical needs. DOS investigates the physical properties of turbid media by studying their interaction with red and near-infrared light. Absorption, scattering and coherence loss are examples of meaningful optical parameters: absorption encodes the tissue chemical composition, i.e. its biomarker concentrations (blood oxygenation, water, lipid and collagen); scattering is related to the presence of microscopic dielectric discontinuities (organelles, membranes, mitochondria, fibrils); coherence loss provides information about chromophores flow (red blood cells). Nowadays, technologies for DOS are undergoing a strong boost thanks to the development of more performant, cost-effective and wearable devices. Together with hardware, also software for data analysis evolves rapidly, pointing to efficiency and accuracy. Analytical (diffusion equation), numerical (Monte Carlo) and machine learning methods proved already effective to derive composition and micro-structure parameters. This event could be a valuable opportunity to gather DOS researchers, including engineers, physicists, biomedical scientists, mathematicians and physicians, to discuss new cutting-edge approaches employing diffuse optics to characterize structural and functional properties of biological tissues. References Gibson, A. P., Hebden, J. C., and Arridge, S. R., Recent advances in diffuse optical imaging, Phys. Med. Biol. 50, (2005), http://dx.doi.org/10.1088/0031-9155/50/4/R01. Durduran, T., Choe, R., Baker, W. B., and Yodh, A. G., Diffuse optics for tissue monitoring and tomography, Reports Prog. Phys. 73, 076701 (2010), http://dx.doi.org/10.1088/0034-4885/73/7/076701. Mesquita, R. C., Durduran, T., Yu, G., Buckley, E. M., Kim, M. N., Zhou, C., Choe, R., Sunar, U., and Yodh, A. G., Direct measurement of tissue blood flow and metabolism with diffuse optics, Philos. Trans. R. Soc. A Math. Phys. Eng. Sci. 369, 4390–4406 (2011), http://dx.doi.org/10.1098/rsta.2011.0232. Erkol, H., Nouizi, F., Unlu, M. B., and Gulsen, G., An extended analytical approach for diffuse optical imaging, Phys. Med. Biol. 60, 5103–5121 (2015), http://dx.doi.org/10.1088/0031-9155/60/13/5103. Hoshi, Y. and Yamada, Y., Overview of diffuse optical tomography and its clinical applications, J. Biomed. Opt. 21, 091312 (2016), http://dx.doi.org/10.1117/1.JBO.21.9.091312. Grosenick, D., Rinneberg, H., Cubeddu, R., and Taroni, P., Review of optical breast imaging and spectroscopy, J. Biomed. Opt. 21, 091311 (2016), http://dx.doi.org/10.1117/1.JBO.21.9.091311. Streeter, S. S., Jacques, S. L., and Pogue, B. W., Perspective on diffuse light in tissue: subsampling photon populations, J. Biomed. Opt. 26, 1–8 (2021), http://dx.doi.org/10.1117/1.JBO.26.7.070601. Wheelock, M. D., Culver, J. P., and Eggebrecht, A. T., High-density diffuse optical tomography for imaging human brain function, Rev. Sci. Instrum. 90, (2019), http://dx.doi.org/10.1063/1.5086809. Yamada, Y., Suzuki, H., and Yamashita, Y., Time-Domain Near-Infrared Spectroscopy and Imaging: A Review, Appl. Sci. 9, 1127 (2019), http://dx.doi.org/10.3390/app9061127.
Complex systems
Mikko Alava	Physics of avalanche phenomena
Proposers Mikko Alava (Aalto University), Paolo Biscari (Politecnico di Milano), Stefano Zapperi (Università degli Studi di Milano) Abstract Avalanche phenomena are observed in a wide range of physical systems, from crackling noise in ferromagnets and ferroelectrics to the failure of crystalline and amorphous material. Understanding the underlying physics of avalanches has important implications for materials science but also for statistical mechanics, due to its connections to the physics of complex and nonlinear phenomena. Interdisciplinary applications of avalanche phenomena range from geophysics to biology, and from engineering to social sciences. This mini-colloquium organised in two sessions will bring together leading experts in the field to discuss the latest developments in the physics of avalanches and crackling noise and their implications for a wide range of disciplines. References Alava, M.J., Laurson, L. and Zapperi, S., 2014. Crackling noise in plasticity. The European Physical Journal Special Topics, 223(11), pp.2353-2367. https://doi.org/10.1140/epjst/e2014-02269-8 De Arcangelis, L., Perrone-Capano, C. and Herrmann, H.J., 2006. Self-organized criticality model for brain plasticity. Physical review letters, 96(2), p.028107. https://doi.org/10.1103/physrevlett.96.028107 Liu, C., Ferrero, E.E., Puosi, F., Barrat, J.L. and Martens, K., 2016. Driving rate dependence of avalanche statistics and shapes at the yielding transition. Physical review letters, 116(6), p.065501. https://doi.org/10.1103/physrevlett.116.065501 Munoz, M.A., 2018. Colloquium: Criticality and dynamical scaling in living systems. Reviews of Modern Physics, 90(3), p.031001. https://doi.org/10.1103/revmodphys.90.031001 Sethna, J.P., Dahmen, K.A. and Myers, C.R., 2001. Crackling noise. Nature, 410(6825), pp.242-250. https://doi.org/10.1038/35065675 Salje, E.K. and Dahmen, K.A., 2014. Crackling noise in disordered materials. Annu. Rev. Condens. Matter Phys., 5(1), pp.233-254. https://doi.org/10.1146/annurev-conmatphys-031113-133838 Vives, E., Ortín, J., Mañosa, L., Rafols, I., Pérez-Magrané, R. and Planes, A., 1994. Distributions of avalanches in martensitic transformations. Physical review letters, 72(11), p.1694. https://doi.org/10.1103/physrevlett.72.1694 Zapperi, S., 2022. Crackling Noise: Statistical Physics of Avalanche Phenomena. Oxford University Press. https://doi.org/10.1093/oso/9780192856951.001.0001
Luciano Pietronero	ECONOMIC FITNESS AND COMPLEXITY
Proposers Luciano Pietronero (Enrico Fermi Research Center, Rome, Italy), Andrea Gabrielli (Dept. of Physics , Univ. of Rome 3 ), Masud Cader (IFC - World Bank, Washington), Yi-Cheng Zhang (Univ. of Friburg, CH) Abstract Economic Fitness and Complexity (EFC) is the recent economic discipline based on a scientific methodology inspired by the science of Complex Systems with special attention to quantitative tests to provide a sound scientific framework. It consists of a data based and bottom up approach that considers specific and concrete problems without economic ideologies and it acquires information from the previous growth data of all countries with methods of Complex Networks, Algorithms and Machine Learning. Its main characteristics are the scientific rigor, the precision in the analysis and in the forecasting, transparency and adaptability. The new Fitness algorithm overcomes the conceptual and practical problems of the early attempts in this field and sets the basis for a testable and successful implementation of the field of Economic Complexity. According to Bloomberg Views: “New research has demonstrated that the fitness technique systematically outperforms standard methods, despite requiring much less data”. The Economic Fitness represents a synthetic measure of the degree of competitivity in terms of the capabilities to produce products and services. The European Commission (Joint Research Center) has recently adopted these methods for the study of the PNRR projects of all the 27 EU countries. Since a few years it has been used by IFC-World Bank Group to define specific economic actions tuned for specific countries, in particular for developing ones. One of the main targets is to identify the products or technologies which will enable to open new markets, considering the specific situation of each country. The IFC-WB has also supported the development of these methodology which is now officially adopted for the planning of its interventions. In this Minicolloquium we provide an overview of the field and discuss the present challenge to extend these methods, developed up to now mostly for countries, also to the analysis of individual companies. References Justin Lin (Peking); L. Summers (Harvard); J. Stiglitz (Columbia); Y.C. Zhang (Fribourg, CH);
Stefano Bonetti	Complexity in quantum matter
Proposers Stefano Bonetti (Ca' Foscari University of Venice), Stefano Ruffo (SISSA Trieste) Abstract Emergence is the landmark of both complex systems, described by network theory, as well as of the collective properties of matter in its condensed phase. Remarkably, the two research fields, historically very much linked by the development of modern physics, did not show, in recent years, enough contamination in terms of ideas, approaches and methods. With this minicolloquium, we aim at reinvigorating the intersection between the communities beyond these two fields. We will have invited speakers showing how network theory can be applied to materials [1, 2], how these materials can be studied with the latest experimental tools [3, 4], and how emergent and still puzzling quantum properties of matter, such as superconductivity [5], topological phases [6], can be investigated theoretically. Moreover, quantum many-body system may display unusual behaviors when the interactions take place on long-range lattices or graphs [7] and universal properties are controlled by a tunable spectral dimension [8]. We will close the minicolloquium with a roundtable discussion between the four invited speakers moderated by one of the proponents, and with interaction with the audience. We believe that the event will spark much interest in a large number of researchers active in both communities, and that it will contribute to future joint collaborations in yet unexplored directions. References [1] G. Caldarelli, A perspective on complexity and networks science, Journal of Physics: Complexity 1, 021001 (2020), DOI 10.1088/2632-072X/ab9a24 [2] P. Villegas, T. Gili, G. Caldarelli, A. Gabrielli, Laplacian renormalization group for heterogeneous networks, Nature Physics (2023), DOI https://doi.org/10.1038/s41567-022-01866-8 [3] N. Maksimovic, D. H. Eilbott, T. Cookmeyer, et al., Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn5, Science 375, 76 (2021), DOI https://doi.org/10.1126/science.aaz4566 [4] S. T. Ciocys, N. Maksimovic, J. G. Analytis, A. Lanzara, Driving ultrafast spin and energy modulation in quantum well states via photo-induced electric fields, npj Quantum Materials 7, 79 (2022), DOI https://doi.org/10.1038/s41535-022-00490-2 [5] V Grinenko, D Weston, F Caglieris, et al., State with spontaneously broken time-reversal symmetry above the superconducting phase transition, Nature Physics 17, 1254 (2021), DOI https://doi.org/10.1038/s41567-021-01350-9 [6] I. Maccari, L. Benfatto, C. Castellani, Broadening of the Berezinskii-Kosterlitz-Thouless transition by correlated disorder, Physical Review B 96 (6), 060508 (2019), DOI: https://doi.org/10.1103/PhysRevB.96.060508 [7] Nicolò Defenu, Metastability and discrete spectrum of long-range systems, Proceedings of the National Academy of Sciences 118, e2101785118 (2021), DOI https://doi.org/10.1073/pnas.2101785118 [8] G Bighin, T Enss, N Defenu, Universal scaling in fractional dimension, arXiv preprint arXiv:2211.13302 (2022)
Rosa Lopez	Fundamental bounds in nano engines
Proposers Rosa Lopez ((Institute for Cross-Disciplinary Physics and Complex Systems), Gloria Platero (Material Science Institute of Madrid), Géraldine Haack (University of Geneva) Abstract The second law  of thermodynamics dictates that Carnot limit is the maximal efficiency for the performance of a thermal machine. However, such upper bound  can be only achieved when it operates reversibly and consequently delivering zero power. However, by working under nonequilibrium conditions thermal machines are able to generate useful work but producing finite entropy or dissipation. Such scenario has been analyzed from the point of view of the recently formulated thermodynamical relations, a new class of bounds that establish an inequality between the uncertainty or precision of currents and the entropy production involved. Thus, dissipation imposes certain limits for the precision of measurable currents that flow in a thermal machine. Such limits seem not being fulfilled by quantum machines in which inherent quantum advantages such as coherence or entanglement are able to circumvent them. Apart from the thermodynamic uncertainties that can be generalized to consider correlations between different currents in a system another kind of relations have been enunciated, the kinetic uncertainty relations that establish bounds for the precision of currents in a system that depend on the activity of a system, a inherently nonequilibrium property. Unifying these uncertainty relations and deriving others, the role of quantum advantages, generalization for time-dependent thermal machines, hybrid machines, maxwell demon machines, many-body interactions among others will be main targets of this minicolloquium. References A. C. Barato and U. Seifert, Thermodynamic uncertainty relation for biomolecular processes, Physical review letters 114, 158101 (2015). https://doi.org/10.1103/PhysRevLett.114.158101 Y. Hasegawa and T. Van Vu, Fluctuation theorem uncertainty relation, Physical review letters 123, 110602 (2019). https://doi.org/10.1103/PhysRevLett.123.110602 K. Macieszczak, K. Brandner, and J. P. Garrahan, Unified thermodynamic uncertainty relations in linear response, Physical review letters 121, 130601 (2018). https://doi.org/10.1103/PhysRevLett.121.130601 Thermodynamic Uncertainty Relation in Interacting Many-Body Systems Timur Koyuk and Udo Seifert Phys. Rev. Lett. 129 210603 (2022) Thermodynamic bounds on coherent transport in periodically driven conductors Elina Potanina, Christian Flindt, Michael Moskalets, and Kay Brandner Phys. Rev. X 11 021013 (2021) https://doi.org/10.1103/PhysRevX.11.021013 Universal Bounds on Fluctuations in Continuous Thermal Machines Sushant Saryal, Matthew Gerry, Ilia Khait, Dvira Segal, and Bijay Kumar Agarwalla Phys. Rev. Lett. 127 190603 (2021) :https://doi.org/10.1103/PhysRevLett.127.190603 Violating the thermodynamic uncertainty relation in the three-level maser Alex Arash Sand Kalaee, Andreas Wacker, and Patrick P. Potts Phys. Rev. E 104 L012103 (2021) https://doi.org/10.1103/PhysRevE.104.L012103 Thermodynamic uncertainty relations including measurement and feedback Patrick P. Potts and Peter Samuelsson Phys. Rev. E 100, 052137 (2019) https://doi.org/10.1103/PhysRevE.100.052137 Entanglement and thermo-kinetic uncertainty relations in coherent mesoscopic transport Kacper Prech, Philip Johansson, Elias Nyholm, Gabriel T. Landi, Claudio Verdozzi, Peter Samuelsson, Patrick P. Potts https://doi.org/10.48550/arXiv.2212.03835
Fundamental Condensed Matter
Hope Bretscher	Two-dimensional excitonic insulators
Proposers Hope Bretscher (MPI, Hamburg, Germany), Elisa Molinari (University of Modena, Italy), Massimo Rontani (Cnr-Nano, Modena, Italy) Abstract The field of the excitonic insulator (EI) is moving fast. This research has its origin in a prediction formulated more than 50 years ago by a group of visionary physicists: If a narrow-gap semiconductor failed to screen its intrinsic charge carriers, then excitons---electron-hole pairs bound together by Coulomb attraction---would spontaneously form. This would destabilize the ground state, leading to a reconstructed ‘excitonic insulator’---a condensate of excitons at equilibrium. This chimeric phase shares similarities with the BCS superconductor: a distinctive broken symmetry, and collective modes of purely electronic origin. Its observation was deterred for decades by the trade-off between competing effects in the semiconductor: as the size of the energy gap decreases, favoring spontaneous exciton generation, the screening of the electron-hole interaction increases, suppressing the exciton binding energy. In the last two years, mounting evidence has been accumulating in 2d materials, as they combine truly long-ranged interactions and giant excitonic effects. New electron-hole bilayers hold promise of room-temperature superfluid behavior [1-4], whereas signatures of the bulk phase were found in monolayers [5-7]. Excitonic materials exhibit other kinds of order as well: a variety that includes topological insulators [6-8], ferroelectrics [8,9], unconventional superconductors [6-7,9]. This introduces new far-reaching questions, concerning the role of excitonic correlations in a plethora of allegedly unrelated phenomena, whose interplay is just beginning to be explored. At the same time, the long-term challenge of establishing the EI through the signatures of macroscopic quantum coherence is attracting renewed interest. By collecting the key actors of theoretical and experimental research, who are spread among different communities, we aim at in-depth analysis of common themes and novel challenges, to progress our understanding of 2d interacting systems. References [1] Liu, X. et al. Crossover between strongly coupled and weakly coupled exciton superfluids. Science 375, 205-209 (2022). https://www.science.org/doi/10.1126/science.abg1110 [2] Ma, L. et al. Strongly correlated excitonic insulator in atomic double layers. Nature 598, 585-589 (2021). https://www.nature.com/articles/s41586-021-03947-9 [3] Chen, D. et al. Excitonic insulator in a heterojunction Moiré superlattice. Nature Phys. 18,1171–1176 (2022). https://www.nature.com/articles/s41567-022-01703-y [4] Zhang, Z. et al. Correlated interlayer exciton insulator in heterostructures of monolayer WSe2 and Moiré WS2/WSe2. Nature Phys. 18, 1214–1220 (2022). https://www.nature.com/articles/s41567-022-01702-z [5] Bretscher, H. et al. Imaging the coherent propagation of collective modes in the excitonic insulator Ta2NiSe5 at room temperature. Science Adv. 7, eabd6147 (2021). https://www.science.org/doi/10.1126/science.abg1110 [6] Jia, Y. et al. Evidence for a monolayer excitonic insulator. Nature Phys. 18, 87–93 (2022). https://www.nature.com/articles/s41567-021-01422-w [7] Sun, B. et al. Evidence for equilibrium exciton condensation in monolayer WTe2. Nature Phys. 18, 94–99 (2022). https://www.nature.com/articles/s41567-021-01427-5 [8] Varsano, D. et al. A monolayer transition-metal dichalcogenide as a topological excitonic insulator. Nature Nanotech. 15, 367–372 (2020). https://www.nature.com/articles/s41565-020-0650-4 [9] Ataei, S. et al. Evidence of ideal excitonic insulator in bulk MoS2 under pressure. PNAS 118, e2010110118 (2021). https://www.pnas.org/doi/abs/10.1073/pnas.2010110118
Juan Archilla	(LONE2023) Localized Nonlinear Excitations in Condensed Matter. Experiments and theory.
Proposers Juan Archilla (Universidad de Sevilla), Francesco Piazza (University of Florence), Janis Bajars (University of Latvia), Vladimir Dubinko (Kharkov Institute of Physics and Technology) Abstract Localized excitations appear in different systems in condensed matter as crystals, polymers, and biological systems. The combination of nonlinearity and discreteness produces localized waves known as kinks, solitons, and breathers. When they transport electric charge they are known as quodons, polarons, solectrons, or polarobreathers. They have been obtained mathematically, but also with classical molecular dynamics and ab initio molecular dynamics. An easy method to produce nonlinear waves is through bombardment with alpha or other particles. Created nonlinear excitations produce the ejection of an atom at the opposite side of a crystal, and hyperconductivity, i.e., and electric current in the absence of an electric field. The possibility of serious negative effects induced by this type of charge transport in tokamak fusion reactors need to be addressed and evaluated. Spectral theory is an efficient tool for analyzing exact solutions and interpret neutron spectroscopy. Wavelet analysis is useful for detecting transient localization. For nonlinear waves transporting charge the difference in time scales between electrons and atoms brings about the need of developing numerical methods that conserve all the properties of the physical system. Biological systems are also of particular interest. For example, enzymes catalyze biochemical reactions that are essential to life often through rate-promoting vibrations localized at the active sites that couple to the reaction coordinates, thus increasing the reaction speed by many orders of magnitude. We need novel theories and mathematical methods to predict properties that can be measured and more experimental proofs of localization. Among relevant topics one may list spectroscopy, interaction with defects and phase transitions, electric currents, carrier density, and production by plasmas and ions. This is the objective of the mini-colloquium. References J Bajars, JFR Archilla. Frequency-momentum representation of moving breathers in a two dimensional hexagonal lattice, Physica D 441 (2022a) 133497 https://doi.org/10.1016/j.physd.2022.133497 (open access). J Bajars, JFR Archilla. Splitting methods for semi-classical Hamiltonian dynamics of charge transfer in nonlinear lattices. Mathematics 10:19 (2022b) 3460 https://doi.org/10.3390/math10193460 (open access) . Y Chalopin, F Piazza, S Mayboroda, C Weisbuch, M Filoche. Universality of fold-encoded localized vibrations in enzymes,. Scientific Reports 9 (2019) 12835 https://doi.org/10.1038/s41598-019-48905-8 (open access) GM Chechin, SV Dmitriev, IP Lobzenko, DS Ryabov. Properties of discrete breathers in graphane from ab initio simulations. Physical Review B 90:4 (2014): 045432 https://doi.org/10.1103/PhysRevB.90.045432 (open access) VI Dubinko, PA Selyshchev, JFR Archilla. Reaction rate theory with account of the crystal anharmonicity. Phys. Rev. E 83 (2011) 041124. http://dx.doi.org/10.1103/PhysRevE.83.041124 M Haas, V Hizhnyakov, A Shelkan, M Klopov, AJ Sievers. Prediction of high-frequency intrinsic localized modes in Ni and Nb. Physical Review B 84:14 (2011) 144303 http://dx.doi.org/10.1103/PhysRevB.84.144303 ME Manley, O. Hellman, N Shulumba, et al., Intrinsic anharmonic localization in thermoelectric PbSe. Nature Commun. 10 (2019) 1928. https://doi.org/10.1038/s41467-019-09921-4 A Rivière, S Lepri, D Colognesi, F Piazza. Wavelet imaging of transient energy localization in nonlinear systems at thermal equilibrium: The case study of NaI crystals at high temperature. Phys. Rev. B 99 (2019) 024307, https://doi.org/10.1103/PhysRevB.99.024307. FM Russell, MW Russell, JFR Archilla. Hyperconductivity in fluorphlogopite at 300 K and 1.1 T. EPL 127:1 (2019) 16001, https://doi.org/10.1209/0295-5075/127/16001
Gregor Jotzu	Coherent Dynamics in Quantum Materials
Proposers Gregor Jotzu (EPFL (École Polytee Fédérale de Lausanne), Switzerlandchniqu), Umberto De Giovannini (Università degli studi di Palermo, Italy) Abstract Understanding and controlling the properties of complex quantum systems is one of most challenging aspects of condensed matter physics, but it opens up the possibility of creating materials with properties that are tunable “on demand.” A key role is played by the interaction of materials with light, where the generation of intense ultrashort laser pulses has enabled experiments to go beyond the n-photon absorption paradigm and into the regime of field-driven dynamics [1,2]. This forms the basis for controlling band structures via periodic driving, known as Floquet engineering [3], which can even be used to change the topology of a band [4,5]. Furthermore, directly driving low-energy modes such as superconducting Higgs modes [6] or phonons [7], is a powerful method to control the electronic and magnetic properties of quantum materials on femtosecond time scales. The rich non-equilibrium dynamics arising in these driven systems forms a formidable challenge for time-dependent extensions to cutting-edge theoretical approaches including ab-inito calculations, dynamical mean field theory or perturbative analytical methods [8]. Recent advances have led to both the successful description of experimental results, and the prediction of new phases [9]. Experimentally, more observables are now accessible on ultrafast time scales, including THz to X-ray optical probes, electron scattering, magnetometry, transport or ARPES. Combining several probes, and furthering their scope and resolution will lead to a more complete understanding of the coherent dynamics of quantum materials. We aim to bring together theorists and experimentalists working at the cutting edge of this extremely interdisciplinary field in order to identify the most important open questions, discover suitable approaches to model experimental results that lack a clear explanation, determine optimal platforms for implementing novel proposals and create synergies for technologies used for pumping and probing. References [1] de la Torre, A., Kennes, D. M., Claassen, M., Gerber, S., McIver, J. W., & Sentef, M. A. (2021). Colloquium: Nonthermal pathways to ultrafast control in quantum materials. Reviews of Modern Physics, 93(4), 041002. https://doi.org/10.1103/RevModPhys.93.041002 [2] Higuchi, T., Heide, C., Ullmann, K., Weber, H. B., & Hommelhoff, P. (2017). Light-field-driven currents in graphene. Nature, 550(7675), 224-228. https://doi.org/10.1038/nature23900 [3] Oka, T., & Kitamura, S. (2019). Floquet engineering of quantum materials. Annual Review of Condensed Matter Physics, 10, 387-408. https://doi.org/10.1146/annurev-conmatphys-031218-013423 [4] Shimano, R., & Tsuji, N. (2020). Higgs mode in superconductors. Annual Review of Condensed Matter Physics, 11, 103-124. https://doi.org/10.1146/annurev-conmatphys-031119-050813 [5] Wang, Y. H., Steinberg, H., Jarillo-Herrero, P., & Gedik, N. (2013). Observation of Floquet-Bloch states on the surface of a topological insulator. Science, 342(6157), 453-457. https://doi.org/10.1126/science.1239834 [6] McIver, J. W., Schulte, B., Stein, F. U., Matsuyama, T., Jotzu, G., Meier, G., & Cavalleri, A. (2020). Light-induced anomalous Hall effect in graphene. Nature physics, 16(1), 38-41. https://doi.org/10.1038/s41567-019-0698-y [7] Disa, A. S., Nova, T. F., & Cavalleri, A. (2021). Engineering crystal structures with light. Nature Physics, 17(10), 1087-1092. https://doi.org/10.1038/s41567-021-01447-1 [8]Bloch, J., Cavalleri, A., Galitski, V., Hafezi, M., & Rubio, A. (2022). Strongly correlated electron–photon systems. Nature, 606(7912), 41-48. https://doi.org/10.1038/s41586-022-04726-w [9] Sato, S. A., McIver, J. W., Nuske, M., Tang, P., Jotzu, G., Schulte, B., ... & Rubio, A. (2019). Microscopic theory for the light-induced anomalous Hall effect in graphene. Physical Review B, 99(21), 214302. https://doi.org/10.1103/PhysRevB.99.214302
Gianguido Baldinozzi	Tuning materials properties through controlled disorder
Proposers Gianguido Baldinozzi (SPMS – CentraleSupelec / Université Paris-Saclay, Gif-sur-Yvette, France.), Katharina Lorenz (Instituto Superior Técnico, and INESC Microsystems and Nanotechnology, Departamento de Engenharia e Ciên-cias Nucleares, Lisbon, Portugal.), Dario Manara (European Commission - Joint Research Centre, Ispra, Italy.), Daniele Torsello (Politecnico di Torino – DiSAT and Istituto Nazionale di Fisica Nucleare, Torino, Italy.) Abstract Control of disorder is crucial for manipulating, optimising and emergence of fundamentally new material properties. This has been demonstrated in the framework of semiconductors and (topological) insulators, quantum materials such as superconductors, quantum magnets, 2D materials and their heterostructures. The control and possible design of disorder is critical for structural and chemical durability, and phase stability of materials exposed to extreme conditions of temperature, strain, pressure, and radiation. This mini colloquium strives to span disorder-related physics and disorder control in systems ranging from single atomic defects such as complex oxides and multicomponent alloys, via defect complexes, composition- and density modifications, to strongly disordered systems such as glasses, in which the role of disorder is linked to dynamic processes and phase transformations. It will address controlled disorder through experimental methods, including self-irradiation in actinide oxides, implantation, milling, lithography, and other forms of micro- and nano-structuring. Systems with coherent and semi-coherent interfaces are also of interest for this mini-colloquium. It is designed to gather communities trying to understand and control disorder in semiconductors, intermetallic alloys and nuclear materials and implementation of different experimental and computational techniques, thereby promoting cross-fertilization novel approaches across communities. It will host five 2.5 hour sessions on, - Single defect engineering, implantation, and self-irradiation phenomena. - Disorder in actinide oxides and alloys - Homogeneous disorder and controlled defect distributions as a fundamental tool for material modification - Design and implementation of controlled heterogeneity - Strong disorder, dynamics, and phase transformations In addition to the oral presentations, a poster session will be organised to allow for extended discussions around the above mentioned topics. References
Serghei Klimin	Quantum gases as analogues of condensed matter systems
Proposers Serghei Klimin (TQC group, Department of Physics, University of Antwerp, Belgium), Jacques Tempere (TQC group, Department of Physics, University of Antwerp, Belgium), Hadrien Kurkjian (Laboratoire de Physique Théorique, Université de Toulouse, CNRS, France), Luca Salasnich (Department of Physics and Astronomy, University of Padova, Italy) Abstract An increasing interest in quantum condensed systems, such as superconductors or ultracold atomic gases, is caused both by a deeper insight in the fundamental quantum physics, thermodynamics and statistical physics and by an opportunity of a breakthrough in device engineering, particularly in quantum computing and simulation. Physics at the intersection between condensed matter and quantum gases in particular is gaining importance. Control of the interaction strength for ultracold atomic Fermi gases makes it possible to realize different regimes of the formation of a macroscopic coherent state. The BCS-BEC crossover scenario is relevant also for strongly coupled superconductors [1]. Multiband superconductivity has found its analogue in the multiband superfluidity of ultracold atomic gases [2]. Typical branches of collective excitations are common for condensed matter and quantum gases: sound-like gapless modes [3, 4], Higgs modes [5], Leggett collective excitations specific for multiband superconductors and superfluids [6]. But there are other interfering areas between physics of condensed matter and quantum gases, e. g., effects of spin-orbit coupling, topological quantum states [7], driven systems, integrability [8], quantum simulations [9], fundamental manifestations of quantum physics like entanglement of states, and more. Thus, we would especially encourage contributions which make highlights of such joint areas. The main objective of the minicolloquium is to arrange a meeting of recognized experts in the fields of condensed matter and quantum gases, dealing with the related problems, and to contribute to the stream of novel ideas common for these fields. We aim for equal representation of both genders and will give preference to contributions from young researchers. This minicolloquium continues and expands the scope of the successful minicolloquium “Collective Effects & Non-Equilibrium Phenomena in Quantum Gases and Superconductors” held at CMD29 – Manchester. References [1] J. Spałek, M. Fidrysiak, M. Zegrodnik and A. Biborski, “Superconductivity in high-Tc and related strongly correlated systems from variational perspective: Beyond mean field theory”, Phys. Rep. 959, 1 (2022). DOI: https://doi.org/10.1016/j.physrep.2022.02.003 [2] M. Höfer, L. Riegger, F. Scazza, C. Hofrichter, D. R. Fernandes, M. M. Parish, J. Levinsen, I. Bloch, and S. Fölling, “Observation of an Orbital Interaction-Induced Feshbach Resonance in 173Yb”, Phys. Rev. Lett. 115, 265302 (2015). DOI: https://doi.org/10.1103/PhysRevLett.115.265302 [3] S. N. Klimin, J. Tempere, and H. Kurkjian, “Phononic collective excitations in superfluid Fermi gases at nonzero temperatures”, Phys. Rev. A 100, 063634 (2019). DOI: https://doi.org/10.1103/PhysRevA.100.063634 [4] G. Bighin, A. Cappellaro, and L. Salasnich, “Unitary Fermi superfluid near the critical temperature: Thermodynamics and sound modes from elementary excitations”, Phys. Rev. A 105, 063329 (2022). DOI: https://doi.org/10.1103/PhysRevA.105.063329 [5] H. Kurkjian, S. N. Klimin, J. Tempere, and Y. Castin, “Pair-Breaking Collective Branch in BCS Superconductors and Superfluid Fermi Gases”, Phys. Rev. Lett. 122, 093403 (2019). DOI: https://doi.org/10.1103/PhysRevLett.122.093403 [6] S. N. Klimin, H. Kurkjian and J. Tempere, “Leggett collective excitations in a two-band Fermi superfluid at finite temperatures”, New Journal of Physics 21, 113043 (2019). DOI: https://doi.org/10.1088/1367-2630/ab54b0 [7] D.-W. Zhang, Y.-Q. Zhu, Y. X. Zhao, H. Yan and S.-L. Zhu, “Topological quantum matter with cold atoms”, Adv. Phys. 67, 253 (2018). DOI: https://doi.org/10.1080/00018732.2019.1594094 [8] Xi-Wen Guan and Peng He, “New trends in quantum integrability: recent experiments with ultracold atoms”, Rep. Prog. Phys. 85, 114001 (2022). DOI: https://doi.org/10.1088/1361-6633/ac95a9 [9] Immanuel Bloch, Jean Dalibard and Sylvain Nascimbène, “Quantum simulations with ultracold quantum gases”, Nature Physics 8, 267 (2012). DOI: https://doi.org/10.1038/nphys2259
Claudio Giannetti	Hybrid Quantum Simulators for condensed matter physics problems
Proposers Claudio Giannetti (Università Cattolica del Sacro Cuore), Massimo Capone (Scuola Internazionale Superiore di Studi Avanzati (SISSA)), Giacomo Roati (CNR-INO & LENS) Abstract The development of Quantum Simulators,[1, 2], artificial platforms where the predictions of many-body theories of correlated quantum materials can be tested in a controllable and tunable way, is one of the main challenges of condensed matter physics. The paradigm of quantum simulations has been pioneered by the development of ultracold-atom systems [3] and extended to solid state via nano- and hetero-structured [4,5] devices and, more recently, twisted bidimensional materials [6]. An additional, promising path is to couple a quantum material with the photons [7] of a cavity [8,9], which opens the possibility to optically drive and control the emergence of collective phenomena and long-range coherence. The scope of this symposium is to combine different platforms, such as cold-atoms, photons in cavities and artificial materials to tackle problems relevant for strongly correlated quantum materials. The invited speakers will contribute to define a broad class of problems, such as coherent transport in periodic and disordered lattices, collective phenomena in proximity of Mott insulating phases and cavity enhanced or topologically-protected long-range coherence, that impact on the current understanding of the macroscopic properties of materials. Particular attention will be dedicated to the definition of common goals that can be achieved by hybrid approaches resulting from the combination of different platforms. References [1] E. Altman et al., Quantum simulators: Architectures and opportunities, PRX Quantum 2, 017003575 (2021). [2] J. I. Cirac and P. Zoller, Goals and opportunities in quantum simulation, Nature Physics 8, 264 (2012). [3] I. Bloch et al. Quantum simulations with ultracold quantum gases, Nature Physics 8, 267 (2012). [4] I. Buluta and F. Nori, Quantum simulators, Science 326,595 108 (2009). [5] C. Lagoin et al. Extended Bose-Hubbard model with dipolar excitons, Nature 609, 485 (2022). [6] Y. Cao et al. Unconventional superconductivity in magic-angle graphene superlattices, Nature 556, 43 (2018). [7] I. Carusotto et al. Quantum Fluids of Light. Rev. Mod. Phys. 85, 299 (2013). [8] H. Walther et al. Cavity quantum electrodynamics, Reports on Progress in Physics 69, 1325 (2006). [9] J. Schachenmayer et al. Cavity-Enhanced Transport of Excitons. Phys. Rev. Lett. 114, 196403 (2015).
Domenico Di Sante	Kagome metals: recent breakthroughs and future perspectives
Proposers Domenico Di Sante (Alma Mater Studiorum University of Bologna (Italy)), Federico Mazzola (Ca’ Foscari University of Venice (Italy)), Giorgio Sangiovanni (Julius Maximilians University of Würzburg (Germany)) Abstract The kagome lattice has emerged as a prototypical playground for sought-after quantum phenomena of electronic matter. From the consolidated perspective of localized spins and quantum magnetism, the geometric frustration of the kagome lattice has triggered interesting quantum phases such as spin liquids. However, only very recently, from the viewpoint of metallic itinerant electrons, the kagome lattice has offered a whole variety of new appealing features. In fact, kagome metals are revolutionising the condensed matter field, and promise themselves as a new and fresh paradigm for intertwined many-body orders, so far the realm of high-Tc cuprates, and more recently twisted bilayer graphene. Since the discovery in 2019 of metallic vanadium-based kagome metals AV3Sb5 (A=K,Rb,Cs), we have seen the prediction of unconventional time-reversal breaking charge order, nematicity, conventional and unconventional superconductivity with a double-dome profile, as well as topological phases. All these exotic states of matter have surfaced evidence from both experimental and theoretical perspective, putting forward kagome metals as new catalysts for the condensed matter research of the last few years. Very recently, bilayer kagome lattices and beyond-vanadium kagome materials have also been predicted to be metallic and featuring interesting many-body and topological physics. This mini-colloquium aims at being the first international stage where, after three years of continuous and hectic breaking discoveries, a fixed point will be drawn. In a 2.5 hours format, three invited talks from renowned leaders in the field and 4 contributed talks are envisioned. In addition, the mini-colloquium wants to be the perfect platform to discuss still open questions and highlight meaningful perspectives for future investigations. Owing to the richness of the physics of kagome metals and their interdisciplinar character, the mini-colloquium will be of high interest to the broad community of CMD. References 1) B. R. Ortiz et al., Phys. Rev. Mater 3, 094407 (2019), https://doi.org/10.1103/PhysRevMaterials.3.094407 2) B. R. Ortiz et al., Phys. Rev. Lett. 125, 247002 (2020), https://doi.org/10.1103/PhysRevLett.125.247002 3) Y.-X. Jiang et al, Nat. Mater. 20, 1353 (2020), https://doi.org/10.1038/s41563-021-01034-y 4) H. Zhao et al., Nature 599, 216 (2021), https://doi.org/10.1038/s41586-021-03946-w 5) X. Wu et al., Phys. Rev. Lett. 127, 177001 (2021), https://doi.org/10.1103/PhysRevLett.127.177001 6) M. Kang et al., Nat. Phys. 18, 301 (2022), https://doi.org/10.1038/s41567-021-01451-5 7) C. Mielke III et al., Nature 602, 245 (2022), https://doi.org/10.1038/s41586-021-04327-z 8) C. Guo et al., Nature 611, 461 (2022), https://doi.org/10.1038/s41586-022-05127-9 9) L. Zheng et al, Nature 611, 682 (2022), https://doi.org/10.1038/s41586-022-05351-3
Michael Ruggenthaler	Cavity-modified material properties
Proposers Michael Ruggenthaler (Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany), Enrico Ronca (Chemistry, Biology and Biotechnology Department, University of Perugia, Italy), Angel Rubio (Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany) Abstract In the last decade several seminal experimental works at the interface of condensed matter physics and quantum optics have demonstrated that material properties and dynamics can be significantly modified by strongly coupling matter excitations to the modes of a photonic environment, e.g. an optical cavity [1]. Among others, it was demonstrated that chemical reactions are modified [2], Bose-Einstein condensation can be obtained at room temperature [3] and that the critical temperature of superconductors can be increased [4]. Due to such results a highly interdisciplinary field of research has emerged that is developing strong light-matter coupling into a versatile tool to manipulate material properties at will. While there has been much experimental progress in the field of photon-modified material properties, many of the effects are not well understood and theoretical explanations remain controversial. In order to gain a detailed understanding many new phenomenological models [5,6,7] as well as ab-initio methods [8,9] have been developed in recent years. In this mini-colloquium we want to provide an overview of these developments and the field of photon-modified material properties. Several lectures by experts will cover the latest theoretical and experimental developments in cavity-modified materials that combine ideas and concepts from condensed matter physics, quantum optics and electronic structure theory to understand how quantum electrodynamics influences condensed matter systems. References [1] Genet, C., Faist, J., & Ebbesen, T. W., Inducing new material properties with hybrid light–matter states. Physics Today, 74(5), 42-48 (2021). https://doi.org/10.1063/PT.3.4749 [2] Hutchison, J. A., Schwartz, T., Genet, C., Devaux, E., and Ebbesen, T. W., Modifying chemical landscapes by coupling to vacuum fields. Angewandte Chemie International Edition, 51, 1592–1596 (2012). https://doi.org/10.1002/anie.201107033 [3] Plumhof, J. D., Stoeferle, T., Mai, L., Scherf, U., and Mahrt, R. F., Room-temperature Bose–Einstein condensation of cavity exciton–polaritons in a polymer. Nature Materials, 13, 247–252 (2014). https://doi.org/10.1038/nmat3825 [4] Thomas, A., Devaux, E., Nagarajan, K., Chervy, T., Seidel, M., Hagenmüller, D., ... and Ebbesen, T. W., Exploring superconductivity under strong coupling with the vacuum electromagnetic field. arXiv preprint arXiv:1911.01459 (2019). https://doi.org/10.48550/arXiv.1911.01459 [5] Strashko, A., Kirton, P., & Keeling, J., Organic polariton lasing and the weak to strong coupling crossover. Physical review letters, 121(19), 193601 (2018). https://doi.org/10.1103/PhysRevLett.121.193601 [6] Schlawin, F., Cavalleri, A., and Jaksch, D., Cavity-mediated electron-photon superconductivity. Physical review letters, 122 (13), 133602 (2019).https://doi.org/10.1103/PhysRevLett.122.133602 [7] Kockum, A. F., Miranowicz, A., De Liberato, S., Savasta, S., and Nori, F., Ultrastrong coupling between light and matter. Nature Reviews Physics, 1(1), 19-40 (2019). https://doi.org/10.1038/s42254-018-0006-2 [8] Ruggenthaler, M., Tancogne-Dejean, N., Flick, J., Appel, H., and Rubio, A., From a quantum-electrodynamical light–matter description to novel spectroscopies. Nature Reviews Chemistry, 2(3), 1-16 (2018). https://doi.org/10.1038/s41570-018-0118 [9] Haugland, T. S., Ronca, E., Kjønstad, E. F., Rubio, A., and Koch, H., Coupled cluster theory for molecular polaritons: Changing ground and excited states. Physical Review X, 10(4), 041043 (2020). https://doi.org/10.1103/PhysRevX.10.041043
Simone Felicetti	Unconventional light-matter interactions: ultrastrong/parametric couplings and advanced quantum control
Proposers Simone Felicetti (Istituto dei Sistemi Complessi CNR-ISC), Alexandre Le Boité (Laboratoire Matériaux et Phénomènes Quantiques), Giuseppe Falci (Università di Catania) Abstract Light-matter interaction is one of the main research axes of modern Quantum Science. The development of atomic and solid-state systems where quantum emitters interact with confined quantized modes makes it possible to enhance the coupling strength by several orders of magnitude. Achieving the strong-coupling (SC) regime, where the coupling strength is larger than decay rates, makes it possible to observe a coherent exchange of excitations. As the controllability of quantum platforms keeps improving, this coherent interaction represents a compelling tool to study the dynamics of quantum degrees of freedom, and even to exploit them for quantum-information tasks. When the interaction is further enhanced up to the ultrastrong-coupling (USC) regime, where the coupling strength is comparable with the bare-system frequencies, the system spectral and dynamical properties are profoundly modified. In the last few years, several experiments have proven that in the USC regime not only the optical, but even electrical and chemical properties can be tailored by embedding quantum emitters and materials in light-confining structures. This minicolloquium will cover the results of recent experimental and theoretical efforts dedicated to (1) the design and implementation of methods to enhance the coupling between quantum emitters and confined photonic or phononic modes. The enhancement is not limited to an increased coupling strength, but it also consists in considering novel forms of interaction beyond the standard dipolar coupling. We consider both genuine (emerging naturally from the system bare components) and parametric (mediated by external fields) couplings. (2) The exploration of the novel quantum phenomenology induced by such unconventional light-matter interactions, both concerning fundamental aspects and possible applications in quantum technologies. (3) The design and the demonstration of advanced quantum controlled dynamics in ultrastrongly-coupled structures. References 1 – Ultrastrong coupling regime of light-matter interaction, P. Forn-Diaz et al., Rev. Mod. Phys. 91, 025005 (2019) (https://link.aps.org/doi/10.1103/RevModPhys.91.025005) 2 – Ultrastrong coupling between light and matter, A.F. Kockum et al., Nat. Rev. Phys. 1, 19-40 (2019) (https://doi.org/10.1038/s42254-018-0006-2) 3 - Theoretical Methods for Ultrastrong Light-Matter Interactions, A. Le Boité, Adv. Quantum Technol. 3, 1900140 (2020) https://doi.org/10.1002/qute.201900140 4 - A Theoretical Perspective on Molecular Polaritonics, M. Sánchez-Barquilla et. al. ACS Photonics 2022, 9, 6, 1830–1841(2022) (https://doi.org/10.1021/acsphotonics.2c00048) 5 - A Tutorial on Optimal Control and Reinforcement Learning methods for Quantum Technologies, L. Giannelli et al, Physics Letters A 434, 128054 (2022) (https://doi.org/10.1016/j.physleta.2022.128054)
Andrea Amoretti	Effective Theories for Condensed Matter
Proposers Andrea Amoretti (University of Genoa), Matteo Baggioli (Jiao Tong University Shanghai ), Karl Landsteiner (IFT Madrid), Piotr Surowka (Wrocław University of Science and Technology) Abstract Condensed matter displays a wide variety of complex many-body interacting systems for which a theoretical microscopic description remains elusive or reachable only using heavy first-principle numerical simulations. Successful simplifying strategies, which can be brought together under the common umbrella of effective theories (ETs), rely on identifying a subset of relevant degrees of freedom and a certain small parameter in order to reduce the full microscopic dynamics into a tractable problem. ETs are built upon the fundamental symmetries of the system under consideration and, within their finite regime of applicability, constitute powerful tools to classify and describe phases of matter and reveal their universal features. ETs have always played a fundamental role in condensed matter physics, from elasticity theory and hydrodynamics to Ginzburg-Landau theory, Fermi liquid theory and the more modern ideas about symmetry-protected topological phases. In addition to that, these approaches have provided a a fertile exchange of ideas between high energy physics and many-body theory with a rapidly growing net of dualities, generalized symmetry principles, commonalities and shared interests between different physics communities. The aim of this mini-colloquium is to review recent progress in the application of effective theory methods to condensed matter problems. Particular emphasis will be put on the three most interdisciplinary and successful approaches: the Gauge-Gravity duality, hydrodynamics and effective field theory. Novel methods, latest results and most promising avenues of these effective methods for condensed matter will be presented by the top researchers in the fields, creating a synergic and exciting environment for the next future discoveries. References [1] Andrea Amoretti. How to construct a holographic EFT for phonons. PoS, 384:001, 2020. https://doi.org/10.22323/1.384.0001doi:10.22323/1.384.0001. [2] Matteo Baggioli and Blaise Goutéraux. Colloquium: Hydrodynamics and holography of charge density wave phases. Review of Modern Physics (in press), 3 2022. arXiv:2203.03298. http://arxiv.org/abs/2203.03298 [3] Tomas Brauner, Sean A. Hartnoll, Pavel Kovtun, Hong Liu, Màrk Mezei, Alberto Nicolis, Riccardo Penco, Shu-Heng Shao, and Dam Thanh Son. Snowmass White Paper: Effective Field Theories for Condensed Matter Systems. In 2022 Snowmass Summer Study, 3 2022, arXiv:2203.10110. http://arxiv.org/abs/2203.10110 [4] Kevin T. Grosvenor, Carlos Hoyos, Francisco Pena Benitez, and Piotr Suròwka. Space-Dependent Symmetries and Fractons. Front. in Phys., 9:792621, 2022. https://doi.org/10.3389/fphy.2021.792621 doi:10.3389/fphy.2021.792621. [5] Sean A. Hartnoll, Andrew Lucas, and Subir Sachdev. Holographic quantum matter. 12 2016. http://arxiv.org/abs/1612.07324 arXiv:1612.07324. [6] Karl Landsteiner. Notes on Anomaly Induced Transport. Acta Phys. Polon. B, 47:2617, 2016. https://doi.org/10.5506/APhysPolB.47.2617doi:10.5506/APhysPolB.47.2617. [7] Hong Liu and Paolo Glorioso. Lectures on non-equilibrium effective field theories and fluctuating hydrodynamics. PoS, TASI2017:008, 2018. arXiv:1805.09331 https://doi.org/10.22323/1.305.0008 doi:10.22323/1.305.0008. [8] John McGreevy. Generalized Symmetries in Condensed Matter. 4 2022, arXiv:2204.03045. http://arxiv.org/abs/2204.03045 [9] Alberto Nicolis, Riccardo Penco, Federico Piazza, and Riccardo Rattazzi. Zoology of condensed matter: Framids, ordinary stuff, extra-ordinary stuff. JHEP, 06:155, 2015. https://doi.org/10.1007/JHEP06(2015)155 doi:10.1007/JHEP06(2015)155.
Antonija Grubisic-Cabo	Advanced photoemission studies of 2D and quantum materials
Proposers Antonija Grubisic-Cabo (University of Groningen), Davide Curcio (Aarhus University), Luca Bignardi (University of Trieste) Abstract Photoemission spectroscopies have enjoyed a renewed interest as a top tier tool for material characterisation thanks to recent advances such as the introduction of the momentum microscope, FEL beamlines suitable for core level photoemission, improved accessibility of time-resolved photoemission setups, and the commissioning of nano-ARPES beamlines, which have all dramatically expanded its possibilities. As a result, new photoemission-based characterization techniques have been introduced, such as direct measurements of the spectral function for in-operando devices, or chemically-resolved surface structural determinations at ultrafast time scales via time‑resolved photoelectron diffraction. Such advancements have created new possibilities to optically control materials and expose hidden phases in them, and have allowed for understanding the working mechanisms of catalytic materials. In addition, it is now possible to investigate the origin of macroscopically observed behaviors in quantum materials, where nanostructuring and spatial dependence of different phases play a fundamental role. Overall, the latest developments have made photoemission spectroscopy even more crucial for finding efficient ways to prepare and characterize novel materials such as 2D materials, topological insulators, molecular networks, nanoparticles and atomic clusters. This mini-colloquium is intended to showcase the non-traditional applications of photoemission enabled by the recent instrument and technique advances. We would like to gather experts at the forefront of research with photoemission spectroscopy techniques, interested in expanding their knowledge about novel synthesis methods and the technical developments ongoing in the field that allow the preparation and investigation of particularly challenging materials, devices and out-of-equilibrium systems. Theoretical advances are also of high interest to the community and we encourage theoretical colleagues to attend as well. References 1. P. D. C. King et al., Angle, Spin, and Depth Resolved Photoelectron Spectroscopy on Quantum Materials, Chem. Rev. 2021, 121, 5, 2816–2856 (2020), https://doi.org/10.1021/acs.chemrev.0c00616 2. D. Kutnyakhov et al., Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser, Rev. Sci. Instrum. 91, 0130109 (2020), https://doi.org/10.1063/1.5118777 3. M. Dendzik et al., Observation of an Excitonic Mott Transition through Ultrafast Core-cum-Conduction Photoemission Spectroscopy, Phys. Rev. Let. 125, 096401 (2020), DOI: https://doi.org/10.1103/PhysRevLett.125.096401 4. Q. Guo et al., A narrow bandwidth extreme ultra-violet light source for time- and angle-resolved photoemission spectroscopy, Structural Dynamics 9, 024304 (2022), https://doi.org/10.1063/4.0000149 5. J. Katoch et al., nt spin-splitting and gap renormalization driven by trions in single-layer WS2/h-BN heterostructures, Nature Comms. 14, 355–359 (2018), https://doi.org/10.1038/s41567-017-0033-4 6. P. Majchrzak et al., In Operando Angle-Resolved Photoemission Spectroscopy with Nanoscale Spatial Resolution: Spatial Mapping of the Electronic Structure of Twisted Bilayer Graphene, Small 1, 2000075 (2021), https://doi.org/10.1002/smsc.202000075 7. D. Curcio et al., Accessing the Spectral Function in a Current-Carrying Device, Phys. Rev. Let. 125, 236403 (2020), https://doi.org/10.1103/PhysRevLett.125.236403 8. D. Curcio et al., Tracking the surface atomic motion in a coherent phonon oscillation, Phys. Rev. B 106, L201409 (2022), https://doi.org/10.1103/PhysRevB.106.L201409 9. L. Bignardi et al, Exploring 2D Materials at Surfaces through Synchrotron-Based Core-Level Photoelectron Spectroscopy, to appear in Surface Science Reports (2023)
Joseph Betouras	Fermi surface topological transitions: effects of interactions
Proposers Joseph Betouras (Loughborough University), Peter Wahl (University of St Andrews), Gertrud Zwicknagl (Technische Universität Braunschweig), Antonio Vecchione (CNR SPIN, Salerno) Abstract Important advancements on understanding the role of Fermi surface topological transitions in correlated systems have been made recently. The effects of the usual Lifshitz transitions and Van Hove singularities (VHs) in correlated systems (including iron pnictides, ferromagnetic superconductors). A complete classification in 2D was achieved as well as theoretical studies how to engineer higher order VHs and flat bands. The interplay between these singularities in the density of states, the different instabilities due to electronic correlations and details of the underpinning crystal structure promise control of correlated phases. The physics of VHs is important in a wide range of correlated electron materials, including ruthenates, heavy fermion materials, twisted bilayer graphene and other moiré lattices where long-standing puzzles can be understood in the framework of higher order Fermi surface topological transitions. Recent studies report new materials that exhibit unusual physics as a result of VHs and formation of flat bands, including Bernal type bilayer graphene, the kagomé superconductor CsV3Sb5 or ferromagnet Fe3Sn2. These developments, in addition to the surge of interest in flat bands and the quest of topological protection and unconventional electronic states stabilized through these, constitute a rapidly evolving field. This Minicolloquium will bring together experimentalists and theorists to stimulate interactions that will enable the field to take the next step, the deliberate control of VHs in these systems and stabilization of novel ground states. This requires spectroscopies with ultra-high energy resolution to detect the VHs on the relevant energy scales, new experimental approaches to tune their energy and class, theoretical approaches combining ab-initio modelling with many-body techniques to determine the leading electronic instabilities and enable design of the VHs, and synthesis of new compounds to create new systems that host these. References Efremov, D. V. et al. Multicritical Fermi Surface Topological Transitions. Phys. Rev. Lett. 123, 207202 (2019). https://doi.org/10.1103/PhysRevLett.123.207202 Yuan, N. F. Q., Isobe, H. & Fu, L. Magic of high-order van Hove singularity. Nat Commun 10, 5769 (2019). https://doi.org/10.1038/s41467-019-13670-9 Sunko, V. et al. Direct observation of a uniaxial stress-driven Lifshitz transition in Sr2RuO4. npj Quantum Mater. 4, 46 (2019). Volovik, G. E. Topological Lifshitz transitions. Low Temperature Physics 43, 47 (2017). Ran, S. et al. Nearly ferromagnetic spin-triplet superconductivity. Science 365, 684 (2019). DOI: 10.1126/science.aav8645 McCollam, A., Fu, M. & Julian, S. R. Lifshitz transition underlying the metamagnetic transition of UPt 3. J. Phys.: Condens. Matter 33, 075804 (2021). Regnault, N. et al. Catalogue of flat-band stoichiometric materials. Nature 603, 824 (2022). https://doi.org/10.1038/s41586-022-04519-1 Kang, M. et al. Twofold van Hove singularity and origin of charge order in topological kagome superconductor CsV3Sb5. Nature Physics 18, 301 (2022). https://doi.org/10.1038/s41567-021-01451-5
Luca Cipelletti	Driven amorphous solids: linking microscopic structure and dynamics to mechanical properties
Proposers Luca Cipelletti (L2C, University Montpellier, France), Kirsten Martens (CNRS & Univ Grenoble Alpes, France), Giulio Monaco (Università di Padova (I)) Abstract Amorphous materials (AMs) are ubiquitous in industrial products, everyday life, and Nature, from polymer-based plastics, network-forming systems as in flexible electronics, biomedical applications or the cell cytoskeleton, soft solids, e.g. concentrated emulsions or colloidal suspensions and biological tissues, to hard-condensed matter systems, e.g. metallic glasses. The behavior of AMs under a mechanical load is a key property with strong practical implications. Measuring, understanding, and modelling the relationship between the mechanical properties and the evolution of the microscopic structure and dynamics in AMs is a formidable challenge for academic research. Indeed, while their behavior at rest or in the linear regime is well understood, much less is known about the non-linear regime, where permanent damage is induced in the material, eventually leading to failure. Mechanical loading is a popular way of driving AMs. However, other driving modes, e.g. osmotic stresses, thermal cycling, irradiation, or electric fields will also be covered in this Mini-colloquium, aiming at identifying common features across fields and sub-disciplines that are rarely gathered in a single scientific meeting. CMD30 – FisMat2023 provides a unique opportunity to bring together a diverse community interested in several fields at the core of CMD30: soft condensed matter, biophysics, materials science, structural and mechanical properties of materials, and disordered media. We will organize sessions comprising one or two 30’ invited talk and several 15’ contributed talk, each session covering a key question or ‘hot’ research topic: 1. The nature of the yielding transition: new approaches in theoretical modelling. 2. Driven biologically systems. 3. Precursors of material failure at the microscopic level: can we predict and anticipate failure? 4. New experimental methods to probe the dynamics and structure of driven AMs. 5. Numerical simulations: towards a multiscale modelling. References 1. J. Slootman, V. Waltz, C. J. Yeh, C. Baumann, R. Göstl, J. Comtet, and C. Creton, Quantifying Rate- and Temperature-Dependent Molecular Damage in Elastomer Fracture, Phys. Rev. X 10, 041045 (2020). DOI: 10.1103/PhysRevX.10.041045 2. A. Nicolas, E. E. Ferrero, K. Martens, and J.-L. Barrat, Deformation and Flow of Amorphous Solids: Insights from Elastoplastic Models, Rev. Mod. Phys. 90, 045006 (2018). DOI: 10.1103/RevModPhys.90.045006 3. D. Bonn, M. M. Denn, L. Berthier, T. Divoux, and S. Manneville, Yield Stress Materials in Soft Condensed Matter, Reviews of Modern Physics 89, 035005 (2017). DOI: 10.1103/RevModPhys.89.035005 4. Leishangthem, P., Parmar, A. D. S. & Sastry, S. The yielding transition in amorphous solids under oscillatory shear deformation. Nature Communications 8, 14653 (2017). DOI: 10.1038/ncomms14653 5. Pan J, Wang YX, Guo Q, Zhang D, Greer AL, Li Y. Extreme rejuvenation and softening in a bulk metallic glass. Nature Communications 9, 560 (2018). DOI: 10.1039/C8SM00109J 6. Z Zhang, J Ding, E Ma Shear transformations in metallic glasses without excessive and predefinable defects. Proceedings of the National Academy of Sciences 119 (48), e2213941119 (2022). DOI: 10.1073/pnas.2213941119 7. F. Dallari, A. Martinelli, F. Caporaletti, M. Sprung, G. Baldi, G. Monaco. Stochastic atomic acceleration during the X-ray-induced fluidization of a silica glass. Proceedings of the National Academy of Sciences 120, e2213182120 (2023). DOI: 10.1073/pnas.2213182120 8. Cipelletti, L., Martens, K., & Ramos, L. (2020). Microscopic precursors of failure in soft matter. Soft matter, 16(1), 82-93. DOI: 10.1039/C9SM01730E 9. Richard, D., Ozawa, M., Patinet, S., Stanifer, E., Shang, B., Ridout, S. A., ... & Manning, M. L. (2020). Predicting plasticity in disordered solids from structural indicators. Physical Review Materials, 4(11), 113609. DOI: 10.1103/PhysRevMaterials.4.113609
Igor Yurkevich	Strongly Disordered Systems
Proposers Igor Yurkevich (Aston University), Andrey Varlamov (Spin-CNR), Claire Marrache-Kikuchi (Université Paris-Saclay) Abstract The interplay between disorder and localization is a fundamental problem of condensed matter physics. Strongly disordered insulators exhibit many unique properties that either emerge from an increased level of disorder or, on the contrary, retain the features of their cleaner counterparts. Understanding how these insulators develop and how they respond to external excitations (or perturbations) is still a theoretical and an experimental challenge. Similarly, the evolution of the superconducting order parameter with disorder is a question that continues to be animatedly discussed in the case of strongly disordered superconductors. The mini-colloquium aims at gathering world-known experts to address topics that have recently emerged thanks to innovative experimental techniques, fabrication of novel materials and theoretical progress on the physics of strongly disordered and low dimensional systems. References
Low dimensional materials
Carlo Grazianetti	Xenes: two-dimensional synthetic materials beyond graphene
Proposers Carlo Grazianetti (CNR-IMM, Unit of Agrate Brianza), Alessandro Molle (CNR-IMM, Unit of Agrate Brianza), Christian Martella (CNR-IMM, Unit of Agrate Brianza) Abstract After the graphene isolation, the technological know-how on the surface science techniques and deposition techniques were mature enough to afford the challenge to create artificial two-dimensional (2D) lattices mimicking the graphene properties, giving rise to the Xenes. The Xenes, where the X element to date ranges from column III to VI of the periodic table, thus represent an intriguing opportunity in condensed matter physics to manipulate the properties of 2D crystals at the atomic scale. In this respect, fascinating challenges involving both theory and experiments rely on the prediction of new Xenes, their synthesis and exploitation for many applications in nanotechnology. This Minicolloquium therefore aims to bring together scientists from different areas (physics, chemistry, engineering, material science) to discuss the latest developments in the field of Xenes with a focus on both the scientific and technological aspects of the synthesis, processing, characterization, modeling, and applications of these 2D materials. Topics to be covered by the Minicolloquium (but not limited to): -synthesis of Xenes: epitaxial growth and segregation, chemical vapour deposition, mechanical and chemical exfoliation/deintercalation. -characterization of Xenes: in- and ex-situ microscopy (STM, AFM, TEM, …) and spectroscopy (X-ray, Raman, and optical). -theoretical predictions of Xenes: electronic, optical, magnetic, and topological properties investigated by density functional theory and/or molecular dynamics. -engineering of Xenes: homo- and heterostructures, chemical functionalization, strain, doping. -processing of Xenes : encapsulation, stabilization, layer transfer, patterning, etching. -device integration of Xenes: electronic (FETs, memristors, capacitors, ...), photonic (phototransistors, detectors, plasmonic gratings, ...), flexible (strain gauges, e-tattoos, ...), and chemical (gas detectors, sensors, ...) devices. References - Molle and Grazianetti (editors), Xenes: 2D Synthetic Materials Beyond Graphene, Elsevier [ISBN: 978-0-12-823838-7 (online)] - Bonaventura, Martella, Grazianetti, Molle, et al., Optical and thermal responses of silicene in Xene heterostructures, Nanoscale Horiz. 7, 924 (2022) [DOI: 10.1039/D2NH00219A] - Grazianetti and Martella, The Rise of the Xenes: From the Synthesis to the Integration Processes for Electronics and Photonics, Materials 14, 4170 (2021) [DOI: 10.3390/ma14154170] - Dhungana, Grazianetti, Martella, Molle, et al., Two‐Dimensional Silicene–Stanene Heterostructures by Epitaxy, Adv. Funct. Mater. 31, 2102797 (2021) [DOI: 10.1002/adfm.202102797] - Martella, Grazianetti, Molle, et al., Disassembling Silicene from Native Substrate and Transferring onto an Arbitrary Target Substrate, Adv. Funct. Mater. 30, 2004546 (2020) [DOI: 10.1002/adfm.202004546] - Grazianetti, Martella, Molle, The Xenes Generations: A Taxonomy of Epitaxial Single-Element 2D Materials, Phys. Status Solidi RRL 14, 1900439 (2020) [DOI: 10.1002/pssr.201900439] - Grazianetti, Martella, Molle, Optical conductivity of two-dimensional silicon: evidence of Dirac electrodynamics, Nano Lett. 18, 7124 (2018) [DOI: 10.1021/acs.nanolett.8b03169] - Molle, Grazianetti, et al., Silicene, silicene derivatives, and their device applications, Chem. Soc. Rev. 47, 6370 (2018) [DOI: 10.1039/C8CS00338F] - Tao, Grazianetti, Molle, et al., Silicene field-effect transistors operating at room temperature, Nature Nanotech. 10, 227 (2015) [DOI: 10.1038/nnano.2014.325]
Simona Achilli	Design, synthesis and applications of novel 2D and 1D carbon materials
Proposers Simona Achilli (University of Milan), Carlo Spartaco Casari (Politecnico di Milano), Pavel Jelinek ( Institute of Physics of the Czech Academy of Science), Sabine Maier (University of Erlangen-Nürnberg) Abstract The design, synthesis and characterization of novel carbon-based 1D and 2D materials has the potential to drive the physics of nanostructures beyond the well-known properties of graphene and nanotubes, offering tailored solutions for different applications, exploiting a low cost and green element as carbon. This minicolloquium aims at bringing together theoretical and experimental scientists active in the field of low dimensional conjugated carbon systems, offering a platform to exchange achievements, challenges and perspectives. The minicolloquium focus on: · molecular 1D and 2D carbon systems (including COFs, MOFs) · functionalized nanoribbon and nanotubes · carbyne and related linear carbon chains · hybrid sp-sp2- systems · graphyne and graphdiyne · novel carbon structures with exotic magnetic properties All contributions exploring the aspects related to chemical synthesis and theoretical and experimental characterization of the structural, electronic, magnetic and topological properties of these systems, including examples of devices and advanced technological applications are welcome. The purpose is to furnish a wide perspective on the actual capability to control and characterize the structure-properties relationship at the nanoscale and assess the innovation potential of these new materials. References X. Gao, H.o Liu,D. Wang, J. Zhang “Graphdiyne: synthesis, properties, and applications”, Chem. Soc. Rev., 48, 908-936 (2019) DOI: https://doi.org/10.1039/C8CS00773J L. Hou, X. Cui, B. Guan, Sh. Wang, R. Li, Y. Liu, D. Zhu, J. Zheng “Synthesis of a monolayer fullerene network”, Nature 606,507–510 (2022) DOI: https://doi.org/10.1038/s41586-022-04771-5 Fan, Q. L. Yan, M. W. Tripp, O. Krejčí, S. Dimosthenous, S. R. Kachel, M. Chen, A. S. Foster, U. Koert, P. Liljeroth, J. M. Gottfried “Biphenylene network: A nonbenzenoid carbon allotrope”, Science 372, 852–856 (2021). DOI: 10.1126/science.abg450 B. Cirera, A. Sánchez-Grande, B. de la Torre, J. Santos, S. Edalatmanesh, E. Rodríguez-Sánchez, K. Lauwaet, B. Mallada, R. Zbořil, R. Miranda, O. Gröning, P. Jelínek, N. Martín, D. Ecija “Tailoring topological order and π-conjugation to engineer quasi-metallic polymers”, Nature Nanotech. 15 (2020) 437 - 443. DOI: https://doi.org/10.1038/s41565-020-0668-7 F. Xiang, S. Maisel, S. Beniwal, V. Akhmetov, C. Ruppenstein, M. Devarajulu, A. Dörr, O. Papaianina, A. Görling, K.Y. Asharov, S. Maier ”Planar π-extended cycloparaphenylenes featuring all-armchair edge topology”, Nat. Chem. 14, 871–876 (2022) DOI: 10.1038/s41557-022-00968-3 S. Achilli, A. Milani, G. Fratesi, F. Tumino, N. Manini, G. Onida, C. S. Casari, “Graphdiynes interacting with metal surfaces: First-principles electronic and vibrational properties”, 2D Mater. 8 (4), 044014 (2021); DOI: 10.1088/2053-1583/ac26ad A. Rabia, F. Tumino, A. Milani, V. Russo, A. Li Bassi, N. Bassi, A. Luccotti, S. Achilli, G. Fratesi, N. Manini, G. Onida, Q. Sun, W. Xu, C. S. Casari “Structural, Electronic, and Vibrational Properties of a Two dimensional Graphdyine-like carbon nano-network synthesized on Au(111): Implications for the engineering of sp-sp2 carbon nanostructures”, ACS Appl. Nano Mater. 3, 12, 12178–12187 (2020); DOI: 10.1021/acsanm.0c02665 P. Marabotti, M. Tommasini, C. Castiglioni, P. Serafini, S. Peggiani, M. Tortora, B. Rossi, A. Li Bassi, V. Russo, C. S. Casari, Electron-phonon coupling and vibrational properties of size-selected linear carbon chains by resonance Raman scattering, Nature Commun. 13, 5052 (2022); DOI: 10.1038/s41467-022-32801-3
Camilla Coletti	Graphene qubits
Proposers Camilla Coletti (IIT Genova), Klaus Ensslin (ETH Zurich), Christoph Stampfer (RWTH Aachen) Abstract Graphene and bilayer graphene are attractive platforms for quantum circuits with potential applications in the area of quantum information. This has motivated substantial efforts in studying quantum dot devices based on graphene and bilayer graphene both from a theoretical and experimental point of view. Graphene and bilayer graphene, have since a while been identified as interesting hosts for spin and spin-valley qubits, thanks to their weak spin-orbit coupling and weak hyperfine interaction. Bilayer graphene is attracting in particular increasing attention, as it presents a gate-tunable band gap, which can be used to electrostatically confine charge carriers into quantum point contacts and quantum dots (QDs) In recent years gate-controlled single and double quantum dots in electrostatically gaped BLG attracted great interest and a remarkable degree of control in such devices has been shown. Gate-defined quantum dots have been realized in bilayer graphene, allowing control of the occupation at the single-charge level and tunability from electron to hole occupation, the observation of spin and valley states as well as spin-valley coupling, and interdot coupling tunability in double-dot systems The field is moving towards the implementation of spin and valley-qubits in graphene. References 1. G Burkard, Two Spins Take the Quantum Bus Physics 15, 65 (2022) 2. Chuyao Tong, Florian Ginzel, Wei Wister Huang, Annika Kurzmann, Rebekka Garreis, Kenji Watanabe, Takashi Taniguchi, Guido Burkard, Jeroen Danon, Thomas Ihn, Klaus Ensslin, Three-carrier spin blockade and coupling in bilayer graphene double quantum dots arXiv preprint arXiv:2211.04882 3. Andreij C Gadelha, Viet-Hung Nguyen, Eliel GS Neto, Fabiano Santana, Markus B Raschke, Michael Lamparski, Vincent Meunier, Jean-Christophe Charlier, Ado Jorio, Electron–Phonon Coupling in a Magic-Angle Twisted-Bilayer Graphene Device from Gate-Dependent Raman Spectroscopy and Atomistic Modeling Nano letters 22, 6069-6074 4. Jørgen Holme Qvist, Jeroen Danon, Probing details of spin--orbit coupling through Pauli spin blockade https://doi.org/10.48550/arXiv.2204.12546 5. Lisa Maria Gächter, Rebekka Garreis, Chuyao Tong, Max Josef Ruckriegel, Benedikt Kratochwil, Folkert Kornelis de Vries, Annika Kurzmann, Kenji Watanabe, Takashi Taniguchi, Thomas Ihn, Klaus Ensslin, Wister Wei Huang, Single-shot readout in graphene quantum dots PRX Quantum 3, 020343 (2022) 6. A Knothe, LI Glazman, VI Fal’ko, Tunneling theory for a bilayer graphene quantum dot’s single-and two-electron states New Journal of Physics 24, 043003 (2022) 7. Marco Polini, Francesco Giazotto, Kin Chung Fong, Ioan M Pop, Carsten Schuck, Tommaso Boccali, Giovanni Signorelli, Massimo D'Elia, Robert H Hadfield, Vittorio Giovannetti, Davide Rossini, Alessandro Tredicucci, Dmitri K Efetov, Frank HL Koppens, Pablo Jarillo-Herrero, Anna Grassellino, Dario Pisignano, Materials and devices for fundamental quantum science and quantum technologies arXiv preprint arXiv:2201.09260 8. Luca Banszerus, Katrin Hecker, Samuel Möller, Eike Icking, Kenji Watanabe, Takashi Taniguchi, Christian Volk, Christoph Stampfer, Spin relaxation in a single-electron graphene quantum dot Nature Communications 13, 1 (2022)
Jagoda Sławińska	2D materials for spintronics
Proposers Jagoda Sławińska (Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747AG Groningen, Netherlands), Christian Rinaldi (Dipartimento di Fisica, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133 Milano, Italia), Felix Casanova (CIC nanoGUNE BRTA, 20018 Donostia-San Sebastian, Basque Country, Spain and IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Basque Country, Spain) Abstract Recent developments in the fabrication of various two-dimensional (2D) crystals and their heterostructures opened unlimited possibilities to design materials with desired properties. One of the intensely explored areas of research is 2D spin-orbitronics, in which the reduced symmetry in 2D materials can be tuned to achieve new phenomena or to boost known effects ascribed to spin-orbit coupling, even without the use of ferromagnets. Such a field offers a huge potential for future heterogeneous integration in electronics [1] of low-power spin-based memories [2] and computing devices beyond-CMOS [3]. In this mini-colloquium, we intend to feature the recent research on spin-orbit related effects in non-magnetic 2D materials. The topics will be related (but not limited) to electronic structures, charge-to-spin conversion [4, 5], spin-orbit torques [6, 7], and topological properties studied using experimental, computational, and theoretical methods. We will aim to emphasize the advantages of the reduced dimensionality that could be explored to discover novel effects and functionalities. References [1] M. C. Lemme et al., 2D materials for future heterogeneous electronics, Nature Communications 13, 1392 (2022). DOI : https://doi.org/10.1038/s41467-022-29001-4 [2] H. Yang et al., Two-dimensional materials prospects for non-volatile spintronic memories. Nature 606, 663–673 (2022). DOI: https://doi.org/10.1038/s41586-022-04768-0 [3] S. Manipatruni, Beyond CMOS computing with spin and polarization, Nature Physics 14, 338 (2018). DOI: https://doi.org/10.1038/s41567-018-0101-4 [4] R. Galceran et al., Control of spin–charge conversion in van der Waals heterostructures, APL Materials 9, 100901 (2021). DOI: https://doi.org/10.1063/5.0054865 [5] F. Calavalle et al. , Gate-tuneable and chirality-dependent charge-to-spin conversion in tellurium nanowires, Nature Materials 21, 526 (2022). DOI: https://doi.org/10.1038/s41563-022-01211-7 [6] H. Kurebayashi et al., Magnetism, symmetry and spin transport in van der Waals layered systems, Nature Reviews Physics 4, 150 (2022). DOI: https://doi.org/10.1038/s42254-021-00403-5 [7] J. Hidding and M. Guimarães*, Spin-Orbit Torques in Transition Metal Dichalcogenide/Ferromagnet Heterostructures, Front. Mater. 7, 594771 (2020). DOI: https://doi.org/10.3389/fmats.2020.594771
Antia Botana	Ferroic and multiferroic van der Waals materials
Proposers Antia Botana (Arizona State University (USA)), Marco Gibertini (University of Modena and Reggio Emilia (Italy)), Jose Lado (Aalto University (Finland)), Nicolas Ubrig (University of Geneva (Switzerland)) Abstract Ferroics are materials where an ordered state emerges at low temperature as a result of a collective coupling between dipolar degrees of freedom. Typical examples are magnetic and ferroelectric materials, involving an ordered arrangement of magnetic moments and electric dipoles, respectively. Remarkably, more than one ferroic order can emerge at the same time, giving rise to so-called multiferroic materials. The existence of multiple symmetry-breaking orders might activate a coupling between them, e.g. allowing to control magnetization through electric fields. Over the last decades, a variety of ferroic and multiferroic bulk compounds has been demonstrated, providing alternative strategies for multifunctional devices [1]. However, focusing on the realm of two dimensional (2D) materials, purely 2D ferroic and multiferroics have remained elusive until recently [2-4]. Beyond isolating individual ferroic and multiferroic monolayers, a potential alternative strategy to realize non-trivial order in van der Waals materials relies on artificially engineering it through stacking monolayers into van der Waals heterostructures [5]. This mini-colloquium aims at providing an overview on the rapidly growing field of research on ferroic and multiferroic van der Waals materials, both from a theoretical and experimental side. This research area has just started and we expect some original and cutting edge contributions from the community. Through the direct experience of leading scientists in physics, chemistry, materials science, and engineering, we will elucidate the most challenging and exciting aspects arising from the design, discovery, and understanding of this intriguing class of materials. References [1] Spaldin, N. A. and Ramesh, R. Advances in magnetoelectric multiferroics. Nature Materials 18, 203-212 (2019). https://doi.org/10.1038/s41563-018-0275-2 [2] Huang, B., Clark, G., Navarro-Moratalla, E. et al. Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit. Nature 546, 270-273 (2017). https://doi.org/10.1038/nature22391 [3] Cui, C., Hu, W.-J., Yan, X. et al. Intercorrelated In-Plane and Out-of-Plane Ferroelectricity in Ultrathin Two-Dimensional Layered Semiconductor In2Se3. Nano Letters 18, 1253-1258 (2018). https://doi.org/10.1021/acs.nanolett.7b04852 [4] Song, Q., Occhialini, C.A., Ergeçen, E. et al. Evidence for a single-layer van der Waals multiferroic. Nature 602, 601-605 (2022). https://doi.org/10.1038/s41586-021-04337-x [5] Gong, C., Kim E.M., Wang, Y., et al. Multiferroicity in atomic van der Waals heterostructures. Nature Communications 10, 2657 (2019). https://doi.org/10.1038/s41467-019-10693-0
Alexander Zyuzin	Engineered topological correlated states in hybrid quantum systems
Proposers Alexander Zyuzin (Aalto University, Finland), Manohar Kumar (Aalto University, Finland ), Francesco Giazotto (Scuola Normale Superiore, Laboratorio NEST, Pisa), Pertti Hakonen (Aalto University, Finland) Abstract The mini colloquium is about the topological phenomena in strongly interacting quantum systems. While the study of fractional quantum Hall and correlated systems at large has a very rich history, the recent impressive progress in the quantum material fabrication technology opens new frontiers for fascinating discoveries. The significant interest is in the engineered quantum systems based on graphene and van der Waals materials, where the interplay of electronic band structure, symmetry, and interactions between particles leads to the exotic correlated and topological phenomena including unusual superconductors and correlated insulators. One of the major efforts is to demonstrate the non-Abelian states of matter which might be useful for the topological quantum computations. We will discuss the recent activities on designer platforms for creation and manipulation of such topologically nontrivial excitations. Topics will include but are not limited to: Non-abelian quantum statistics. Interferometry and quantum optics experiment. Quantum Hall states and superconductivity. Correlated insulator and superconductivity in quantum materials. References 1. Fractional statistics in anyon collisions, H. Bartolomei, M. Kumar et al., Science v. 368, p. 173 (2020). https://doi.org/10.1126/science.aaz5601 2. Imaging tunable quantum Hall broken-symmetry orders in graphene, Coissard et al., Nature v. 605, p. 61 (2022). https://doi.org/10.1038/s41586-022-04513-7 3. Graphene bilayers with a twist, E. Andrei and A. MacDonald, Nature Material v. 19, p. 1265 (2021). https://doi.org/10.1038/s41563-020-00840-0 4. Anyons and the quantum Hall effect - a pedagogical review, Ady Stern, Annals of physics v. 323, p. 204 (2008). https://doi.org/10.1016/j.aop.2007.10.008 5. Exotic non-Abelian anyons from conventional fractional quantum Hall states, D.J. Clarke et al., Nature Communications v. 4, 1348 (2013). https://doi.org/10.1038/ncomms2340
Alberto Crepaldi	Femtosecond Photoemission Spectroscopy in Charge Ordered Materials
Proposers Alberto Crepaldi (Politecnico di Milano), Ettore Carpene (CNR - IFN), Federico Cilento (Elettra Sincrotrone Trieste), Selene Mor (Università Cattolica del Sacro Cuore di Brescia) Abstract The discovery of charge ordering in high-temperature superconductors 1, in twisted bilayer graphene 2 and in different families of topological materials 3,4, has revived the study of charge density wave (CDW) in condensed matter. After decades since the seminal contribution of Peierls 5, we have a qualitative knowledge of the main actors involved in the phenomenon, but we still lack predictive capabilities, especially when dealing with real materials where multiple bands, with different dimensionalities, contribute to the Fermi surface and the elegant “nesting” idea fails 5. This happens for example in the recently synthesized topological Kagome metals, where CDW instability accompanies superconductivity. An improved comprehension of the CDW formation could potentially provide indicators related to the electronic and phononic properties allowing us to identify compounds with competing orders. In CDW, electron-electron and electron-phonon interactions are simultaneously at play, with similar intensity thus making barely impossible to determine which is the actual driving force of the phase transition. In the years, time and angle resolved photoemission spectroscopy (trARPES) has contributed in isolating the two terms on the basis of their characteristic temporal scale, with momentum and energy resolution. For this minicolloquium we propose a single slot of 2.5 hours to give space to 2-3 invited and 5-6 contributed talks delivered by leading experts in the field with the dual intent to discuss the breakthrough of novel families of CDW materials along with the impact of novel technological developments in trARPES. In fact, the recent advent of light source operating at several kHz 8 enables us to unveil the small modifications in the band structure that are at the origin of the CDW instability, while tunable pump energy allows to enhance the response of the lattice, thus efficiently restoring competing electronic and topological phases that are hidden by the CDW. References [1] G. Ghiringhelli et al., Science 337 821 (2012) ; 10.1126/science.1223532 [2] Y. Jiang et al., Nature 573, 91 (2019) ; 10.1038/s41586-019-1460-4 [3] B. R. Ortiz et al., Phys. Rev. Lett. 125 247002 (2020) ; 10.1103/PhysRevLett.125.247002 [4] J. Gooth et al., Nature 575, 315 (2019); 10.1038/s41586-019-1630-4 [5] R. E. Peierls, Quantum Theory of Solids (1955) [6] G. Grüner, Rev. Mod. Phys. 60, 1129 (1988); 10.1103/RevModPhys.60.1129 [7] S. Hellmann et al., Nat. Commun. 3, 1069 (2012); 10.1038/ncomms2078 [8] M. Puppin et al., Rev. of Scient Instrum. 90, 023104 (2019); 10.1063/1.5081938
Klaus Ensslin	Quantum devices in twisted graphene layers
Proposers Klaus Ensslin (ETH Zurich), Dmitri Efetov (LMU Munich), Marco Polini (University of Pisa) Abstract 5 years ago superconductivity was discovered in magic-angle-twisted-bilayer graphene by the group of Pablo Jarillo-Herrero. Since then many groups have built transport and optoelectronic devices on this platform. It turns out that a number of phenomena in condensed matter physics such as superconductivity, ferromagnetism and recently also ferroelectricity have been found and characterized. Also for optoelectronic devices, the twist angle, that can lead to various single-particle gaps and correlated insulators, has become a useful experimental parameter. This symposium gathers speakers that have recently contributed with excellent results to this amazing field. References Piccinini G., Miseikis V., Novelli P., Watanabe K., Taniguchi T., Polini M., Coletti C., Pezzini S., Moiré-Induced Transport in CVD-Based Small-Angle Twisted Bilayer Graphene Nano Letters, vol. 22, (no. 13), pp. 5252-5259 DOI 10.1021/acs.nanolett.2c01114 J. Díez-Mérida, A. Díez-Carlón, S. Y. Yang, Y.-M. Xie, X.-J. Gao, K. Watanabe, T. Taniguchi, X. Lu, K. T. Law and D. K. Efetov, Magnetic Josephson junctions and superconducting diodes in magic angle twisted bilayer graphene arXiv:2110.01067. Elías Portolés, Shuichi Iwakiri, Giulia Zheng, Peter Rickhaus, Takashi Taniguchi, Kenji Watanabe, Thomas Ihn, Klaus Ensslin, and Folkert K. de Vries «A Tunable Monolithic SQUID in Twisted Bilayer Graphene» Nature Nano 17, 1159 (2022), arXiv:2201.13276 Jeong Min Park, Yuan Cao, Li-Qiao Xia, Shuwen Sun, Kenji Watanabe, Takashi Taniguchi, Pablo Jarillo-Herrero, Robust superconductivity in magic-angle multilayer graphene family Nature Materials 21, 877–883 (2022) arXiv:2112.10760 Alon Inbar, John Birkbeck, Jiewen Xiao, Takashi Taniguchi, Kenji Watanabe, Binghai Yan, Yuval Oreg, Ady Stern, Erez Berg and Shahal Ilani, The Quantum Twisting Microscope arXiv:2208.05492 H Sainz-Cruz, PA Pantaleón, VT Phong, A Jimeno-Pozo, F Guinea, Junctions and superconducting symmetry in twisted bilayer graphene arXiv preprint arXiv:2211.11389 I Torre, L Orsini, M Ceccanti, H Herzig-Sheinfux, FHL Koppens, Green's functions theory of nanophotonic cavities with hyperbolic materials arXiv preprint arXiv:2104.00511
Magnetism
Giancarlo Panaccione	Emerging properties in 2D magnetic materials: single and multilayered heterostructures
Proposers Giancarlo Panaccione (CNR Istituto IOM -Trieste), Valentin Alek Dediu (CNR- Istituto ISMN Bologna), Gianluca Gubbiotti (CNR - Istituto IOM - Perugia), Mirko Cinchetti (TU Dortmund Germany ) Abstract The study of magnetism in two-dimensional (2D) materials and various hetero-structures has undergone in recent years a significant development, both from theoretical and experimental sides. The dimensionality constraints induce extraordinary effects: not only many properties present in 3D are significantly modified in a 2D-environment, but also new and unexpected functionalities arise in 2D with no equivalents in the three dimensional compounds. The field of 2D magnetism is rapidly growing, and emergent phenomena down to the monolayer limit have been predicted and observed thanks to relevant progress in the exfoliation and atomically-precise growth technique [1-6]. Striking examples of this behaviour are found in TMDs, Tis, van der Walls and layered systems, as well as in combination of these when building heterostructures. The hybrid interfaces between magnetic and magnetic/non magnetic components represent another remarkable example where the 2D interfacial layer with radically modified electronic functions gives raise to a variety of outstanding magnetic properties. The correlations, gating, reorientation transitions, long-range magnetic order, and ultrafast dynamics to name but a few, have been demonstrated to strongly depend upon the number or layers and/or the interface. References [1] G. M. Pierantozzi et al. Evidence of magnetism-induced topological protection in the axion insulator candidate EuSn2P2 https://doi.org/10.1073/pnas.2116575119 [2] E. Longo et al. Large Spin-to-Charge Conversion at Room Temperature in Extended Epitaxial Sb2Te3 Topological Insulator Chemically Grown on Silicon, DOI: 10.1002/adfm.202109361 [3] A. De Vita et al. Influence of Orbital Character on the Ground State Electronic Properties in the van Der Waals Transition Metal Iodides VI3 and CrI3 https://doi.org/10.1021/acs.nanolett.2c01922 [4] M. Cinchetti et al. Activating the molecular spinterface, DOI 10.1038/NMAT4902 [5] C. Bigi et al. Measuring spin-polarized electronic states of quantum materials: 2H-NbSe2 https://doi.org/10.1103/PhysRevB.103.245142 [6] P.D. C. King et al. Angle, spin, and depth resolved photoelectron spectroscopy on quantum materials https://doi.org/10.1021/acs.chemrev.0c00616
José J. Baldoví	Novel 2D magnetic materials and heterostructures
Proposers José J. Baldoví (ICMOL, Universitat de València), Alberto Brambilla (Politecnico di Milano), Guido Fratesi (Università degli Studi di Milano), Ilaria Bergenti (CNR ISMN) Abstract Two-dimensional (2D) systems, including interfaces, 2D materials and van der Waals (vdW) heterostructures, are currently raising a continuously increasing interest, as they represent excellent playgrounds for exploring intriguing physical phenomena and implementing promising applications. Combining different 2D materials in vdW heterostructures allows, moreover, to create a variety of unprecedented properties and functionalities, also associating 2D magnetism to other properties like ferroelectricity (and, thus, multiferroicity) or superconductivity at the 2D limit, and to manipulate such properties with, e.g., molecular doping, interfacing, or strain-engineering (straintronics). In this mini-colloquium, we aim to bring together a new generation of scientists devoted to explore and develop 2D magnetic materials, combining theory and experiments, and to eventually exploit its fantastic potential. We plan to kick off two sessions, each lasting 2.5 hours, starting with an invited overview talk, and featuring another invited talk. These longer talks presenting recent research highlights, which have been published in high-profile journals, will be complemented by 8-10 contributed talks and contributed posters. References
Nano and Functional materials
Daniele M. Trucchi	Materials & Devices for Solar and Thermal to Electrical Energy Conversion
Proposers Daniele M. Trucchi (National Research Council (CNR-ISM)), Alessandro Bellucci (National Research Council (CNR-ISM)) Abstract Thermal-to-electric conversion represents the backbone of the modern industrial economies. Thermomechanical engines are the standard used converters, but they have severe limitations in (down)scalability, maintenance, degradation over time. Solid-state thermal-to-electric converters are steady devices with no movement, corresponding to long lifetimes and no necessity of maintenance, and are fully scalable, with an efficiency not significantly depending on size. An exceptionally increasing interest has been attracting a huge effort in the R&D of solid-state thermal-to-electric converters, based on development of advanced materials, including smart nanofluids, and novel conversion devices operating at moderate, medium, high, and ultra-high temperature. The minicolloquium addresses to the fast growing thermoelectrics, thermionics, thermophotovoltaics scientific and industrial communities as well as to the more established photovoltaics and concentrated-photovoltaics ones. The colloquium aims to especially stimulate novel hybrid concepts resulting from combinations and/or evolutions of the mentioned technologies, with a specific focus on the increasing amount of applications in industrial energy recovery, solar energy conversion, aerospace propulsion and power generation. References [1] DOI: 10.1038/nphoton.2012.1 [2] DOI: 10.1016/j.nanoen.2019.04.039 [3] DOI: 10.1002/aenm.202200357 [4] DOI: 10.1002/aenm.201802310 [5] DOI: 10.1038/s41586-020-2717-7 [6] DOI: 10.1038/s41467-021-24891-2 [7] DOI: 10.1021/acs.nanolett.0c00227
Bernardo Almeida	New Physics Concepts for Energy and Environmental Nanomaterials
Proposers Bernardo Almeida (Physics Department, Minho University), José Silva (Physics Department, Minho University), Mauro Riccò (Department of Mathematical, Physical and Computer Sciences & INSTM, University of Parma) Abstract Environmental protection and sustainable energy utilization are great challenges due to the reduction of fossil energy, global warming and increasing environmental pollution [1,2]. In this context, nanomaterials have drawn great interest in recent years due to the richness of the underlying physics and the potential for energy and environmental applications. They offer widely tunable optical, mechanical, magnetic, polar and electronic properties, among others, that can be exploited for energy conversion[3,4]. Although both academia and industry are actively making advances in materials synthesis and characterization of their physical properties, novel concepts and materials are still highly demanded [5,6]. Moreover, the study of the underlying physics at unprecedented atomic scale may leverage novel exotic phases and materials properties, and associated new physics[4,7,8]. Energy and environmental materials include, but are not limited to, carbon materials, phosphorus materials, metal oxide, ferroelectrics, multiferroics, perovskites, transition metal dichalcogenides [6]. Different geometries, such as nanofibers, nanowires, nanoparticles, thin films and heterostructures with intriguing physical and chemical properties provide opportunities to address energy and environmental challenges. Therefore, the mini-colloquium aims to be a forum for presentations of recent research work across the full range of condensed matter physics addressing the issues raised. The mini-colloquium intends to offer space for discussing both novel and established topics, including recent advances in theory and simulation, synthesis of nanomaterials, as well as the characterization of novel energy and environmental nanomaterials. References [1] Q. Chen et al., J. Mater. Chem. A 8, 5773-5811 (2020). Doi: 10.1039/C9TA11618D [2] E. Pomerantseva et al, Energy storage: The future enabled by nanomaterials, Science, 366, 969 (2019), DOI: 10.1126/science.aan8285 [3] Robert L. Jaffe, The Physics of Energy, Cambridge University Press, (2018) DOI: 10.1017/9781139061292 [4] W. Gau et al, Energy transduction ferroic materials, Materials Today, 21, 771 (2018), DOI: 10.1016/j.mattod.2018.01.032 [5] D. D. Dionysiou et al., Nanomaterials for energy and environmental applications: advances and recent trends, Current Opinion in Chemical Engineering 36, 100805 (2022). Doi: 10.1016/j.coche.2022.100805 [6] Z. Guo et al., Multifunctional Nanocomposites for Energy and Environmental Applications. (2018) Edited by Wiley. Doi: 10.1002/9783527342501. [7] Luo, H., Yu, P., Li, G. et al. Quantum materials for energy conversion and storage. Nat Rev Phys 4, 611–624 (2022), DOI: 10.1038/s42254-022-00477-9 [8] Scott E. Crawford et al, Quantum Sensing for Energy Applications, Adv. Quantum Technol., 4, 2100049 (2021) , DOI: 10.1002/qute.202100049
Denys Makarov	Curvilinear condensed matter
Proposers Denys Makarov (Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden, Germany ), Gaspare Varvaro (Consiglio Nazionale delle Ricerche, Istituto di Struttura della Materia, 300 Monterotondo Scalo, Roma 00015, Italy), Denis D. Sheka (Taras Shevchenko National University of Kyiv, Kyiv, Ukraine), Carmine Ortix (Dipartimento di Fisica, Università di Salerno, Fisciano, Italy) Abstract Physical properties of living [1] but also synthetic systems in condensed [2] and soft [3] matter are determined by the interplay between the physical order parameter, geometry and topology. Specifically to condensed matter, spin textures, static and dynamic responses become sensitive to bends and twists in physical space. In this respect, curvature effects emerged as a novel tool in various areas of physics to tailor electromagnetic properties and responses relying on geometrical deformations. The influence of the curvilinear geometry on the transport and electromagnetic properties of matter is a hot topic in condensed matter and field theories. Until recently, the impact of a curvature on electronic and magnetic properties of solids was mainly studied theoretically. The remarkable development in nanotechnology, e.g. preparation of high-quality extended thin films and nanowires/tubes and nanoparticles as well as the potential to arbitrarily reshape those architectures after their fabrication, has enabled first experimental insights into the fundamental properties of 3D shaped semiconducting, superconducting, and magnetic nanoarchitectures. This is reflected in a number of topical review papers and books, showing the activity in this research field worldwide [4-9]. The proposed Mini-Colloquium will bring together experts in a broad range of disciplines in condensed matter, namely –semiconductors, superconductors, magnetism, 2D materials, where the geometric shape of (nano)objects play a fundamental role in governing physical responses to electric and magnetic fields. Furthermore, we deliberately bring experts on the topic of soft matter (e.g., nematics) with the aim to reveal similarities and differences in the fundamental properties of soft and hard condensed matter systems. Both theoretical and experimental advances in the field will be covered in the Mini-Colloquium. References [1] McMahon et al., Membrane curvature and mechanisms of dynamic cell membrane remodelling. Nature 438, 590 (2005). [2] Castelvecchi, The strange topology that is reshaping physics. Nature 547, 272 (2017). [3] Senyuk et al., Topological colloids. Nature 493, 200 (2012). [4] Gentile et al., Electronic materials with nanoscale curved geometries. Nature Electronics 5, 551 (2022). [5] Makarov and Sheka (Editors), Curvilinear Micromagnetism: from fundamentals to applications (Springer, Zurich, 2022). [6] Fomin and Dobrovolskiy, A Perspective on superconductivity in curved 3D nanoarchitectures. Appl. Phys. Lett. 120, 090501 (2022). [7] Makarov et al., New Dimension in Magnetism and Superconductivity: 3D and Curvilinear Nanoarchitectures. Adv. Mater. 34, 2101758 (2022). [8] Das et al., Independent geometrical control of spin and charge resistance in curved spintronics. Nano Letters 19, 6839 (2019). [9] Li et al., Electrostatically Driven Polarization Flop and Strain-Induced Curvature in Free-Standing Ferroelectric Superlattices. Adv. Mater. 34, 2106826 (2022).
Gianluca Rastelli	Nanomechanical and electromechanical systems
Proposers Gianluca Rastelli (Pitaevskii BEC Center, CNR-INO, Trento (IT)), Eva Weig ( Technische Universität München - TUM (DE)), Alexander Eichler (ETH Zurich (CH)) Abstract The research in nanomechanical and electromechanical systems continues to receive a growing attention owing to two driving forces: metrology and fundamental science. As their properties can be designed, customized and fabricated with increasing precision, now these devices are envisioned to detect mass, nuclear spins, radiation and temperature at the nanoscale [1-4]. Moreover, high-quality mechanical resonators are employed in several hybrid quantum systems, ranging from electromechanical and optomechanical [5] to quantum acoustic systems [6] in which the interactions between phonons and electrons or phonons and photons are exploited to transduce quantum information between different degrees of freedom. Finally, nanomechanical systems constitute model systems for classical nonlinear dynamics with comparatively strong fluctuations. Hence, nanomechanical devices provide a means of exploring generic features of fluctuations in a driven system far from thermal equilibrium in a quantitative fashion [7-9]. These studies, in turn, lead to novel applications, as it is highly desirable to exploit nonlinearities in the mechanical domain in order to expand the functionality portfolio. This mini-colloquium will serve to bring together the international research community engaged in fundamental research on micro- and nano- electromechanical systems as well as other hybrid, phononic nanoscale systems. It aims at gathering leading experts and young researchers on highly topical activities in this field, including among others: nonlinear dynamics, nonlinear dissipation, electromechanical systems, thermal and thermoelectrical effects in nanoresonators, noise sensing, nonlinear mode coupling, quantum hybrid and acoustic systems, and levitated nanosystems. The mini-colloquium will consist of 6 to 8 invited talks and several slots for contributed talks. We will particularly encourage submissions from junior scientists, including graduate students, postdocs, and junior faculty. References [1] “Elastic Strain Engineering for Ultralow Mechanical Dissipation”, A.H. Ghadimi, A. Fedorov, J. Engelsen, J. Bereyhi, R. Schilling, J. Wilson, T.J. Kippenberg, Science 360, 764 (2018), DOI: 10.1126/science.aar6939 [2] “A Fast and Sensitive Room-temperature Graphene Nanomechanical Bolometer”, A. Blaikie, D. Miller, B.J. Alemán, Nature Communications 10, n.4726 (2019), https://doi.org/10.1038/s41467-019-12562-2 [3] “Probing Nanomotion of Single Bacteria with Graphene Drums”, I.E. Rosłoń, A. Japaridze, P. G. Steeneken, C. Dekker, F. Alijani, Nature Nanotechnology 17, 637 (2022), https://doi.org/10.1038/s41565-022-01111-6 [4] “Ultra-High Q Nanomechanical Resonators for Force Sensing”, A. Eichler, arXiv2209.05183 (2022), https://doi.org/10.48550/arXiv.2209.05183 [5] “Optomechanics for Quantum Technologies”, S. Barzanjeh, A. Xuereb, S. Gröblacher, M. Paternostro, C. A. Regal, E. M. Weig, Nat. Phys. 18, 15 (2022), https://doi.org/10.1038/s41567-021-01402-0 [6] “Quantum Acoustics with Superconducting Qubits”, Y. Chu, P. Kharel, W.H. Renninger, L.D. Burkhart, L. Frunzio, P.T. Rakich, R.J. Schoelkopf, Science 358, 199 (2017), https://www.science.org/doi/10.1126/science.aao1511 [7] “Fluctuating Nonlinear Oscillators: From Nanomechanics to Quantum Superconducting Circuits”, M. Dykman (ed.), Oxford Academic Press, 2012, https://doi.org/10.1093/acprof:oso/9780199691388.001.0001 [8] “Mesoscopic physics of nanomechanical systems”, A. Bachtold, J. Moser, M. I. Dykman, arXiv2202.01819 (2022), https://doi.org/10.48550/arXiv.2202.01819 [Rev. Mod. Phys. (to be published)] [9] “Frequency Comb from a Single Driven Nonlinear Nanomechanical Mode” J. S. Ochs, D. K. J. Boneß, G. Rastelli, M. Seitner, W. Belzig, M. I. Dykman, E. M. Weig, Phys. Rev. X 12, 041019 (2022), https://doi.org/10.1103/PhysRevX.12.041019
Alberto Tagliaferri	New perspectives in electron microscopy for condensed matter Physics
Proposers Alberto Tagliaferri (Politecnico di Milano, Milano, Italy), Jacob Hoogenboom (TUDelft, Delft, The Netherlands), Filip Mika (Institute of Scientific Instruments of the CAS, v.v.i., BRNO, Czech Republic), Silvia Pietralunga (CNR-Istituto di Fotonica e Nanotecnologie, Milano, Italy) Abstract Electron microscopies (EM) are demonstrating more and more impressive insight into condensed matter physics. This minicolloquium will share the most advanced applications and perspectives across the electron microscopy community. Transmission electron microscopy (TEM) boasts sub-atomic lateral resolution combined with spectroscopic selectivity down to meV range and ultrafast time resolution, into the attosecond range, making it one of the most complete microscopic tools for the investigation of carefully prepared thin samples [1,2,3]. The introduction of focused ion beams (FIB) dramatically increased the range of application of TEM. Further advances include gaining control on the angular momentum of primary electrons [4,5] and acquiring in operando capabilities to address real world phenomena. Scanning electron Microscopy (SEM) is still mostly devoted to imaging applications on bulk systems, featuring tunable depth sensitivity and the ability of rapidly switching from large fields of view down to nanoscale lateral resolution. Analytical spectroscopic tools like X-Ray fluorescence and cathodoluminescence provide elemental concentration, chemical and electronic structure bulk properties, where the lateral resolution and energy selectivity are a few orders of magnitude larger than in TEM. The advent of low voltage SEM, low energy EM (LEEM) and controlled environments pave the way to still more pioneering developments towards highly surface sensitive, energy and time selective analytical capabilities [6,7,8]. Local insights into the electronic structure of condensed matter were demonstrated [9]. The surface sensitivity of the SEM probe would make a very fruitful match with the already demonstrated capabilities of TEMs for bulk properties, with the further possibility of implementing in operando non-destructive studies. Ab-initio numerical modeling plays an increasingly crucial role to fully exploit EM [2,7,9]. References [1] R. Bourrellier, S. Meuret, A. Tararan, O. Stéphan, M. Kociak, L.H.G. Tizei, A. Zobelli, Bright UV Single Photon Emission at Point Defects in h-BN, Nano Lett. 16(7), 4317–21 (2016). https://doi.org/10.1021/acs.nanolett.6b01368. [2] A. Polman, M. Kociak, F.J. García de Abajo, Electron-beam spectroscopy for nanophotonics, Nat. Mater. 18(11), 1158–71 (2019). https://doi.org/10.1038/s41563-019-0409-1. [3] Y. Morimoto, P. Baum, Diffraction and microscopy with attosecond electron pulse trains, Nat. Phys. 14(3), 252–6 (2018). https://doi.org/10.1038/s41567-017-0007-6. S. V. Yalunin, A. Feist, C. Ropers, Tailored high-contrast attosecond electron pulses for coherent excitation and scattering, Phys. Rev. Res. 3(3), 1–7 (2021). https://doi.org/10.1103/PhysRevResearch.3.L032036. [4] E. Mafakheri, A.H. Tavabi, P.-H. Lu, R. Balboni, F. Venturi, C. Menozzi, G.C. Gazzadi, S. Frabboni, A. Sit, R.E. Dunin-Borkowski, E. Karimi, V. Grillo, Realization of electron vortices with large orbital angular momentum using miniature holograms fabricated by electron beam lithography, Appl. Phys. Lett. 110(9), 093113 (2017). https://doi.org/10.1103/PhysRevResearch.3.L032036. [5] G. Berruto, I. Madan, Y. Murooka, G.M. Vanacore, E. Pomarico, J. Rajeswari, R. Lamb, P. Huang, A.J. Kruchkov, Y. Togawa, T. LaGrange, D. McGrouther, H.M. Rønnow, F. Carbone, Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope, Phys. Rev. Lett. 120(11), 117201 (2018). https://doi.org/10.1103/PhysRevLett.120.117201. [6] E. Bauer, Surface Microscopy with Low Energy Electrons, Vol. 9781493909353, Springer New York (2014). http://dx.doi.org/10.1007/978-1-4939-0935-3. J. Jobst, J. Kautz, D. Geelen, R.M. Tromp, S.J. van der Molen, Nanoscale measurements of unoccupied band dispersion in few-layer graphene, Nat. Commun. 6(1), 8926 (2015). http://dx.doi.org/10.1038/ncomms9926. [7] R.C. Masters, A.J. Pearson, T.S. Glen, F.-C. Sasam, L. Li, M. Dapor, A.M. Donald, D.G. Lidzey, C. Rodenburg, Sub-nanometre resolution imaging of polymer–fullerene photovoltaic blends using energy-filtered scanning electron microscopy, Nat. Commun. 6(1), 6928 (2015). https://doi.org/10.1038/ncomms7928. [8] M. Zani, V. Sala, G. Irde, S.M. Pietralunga, C. Manzoni, G. Cerullo, G. Lanzani, A. Tagliaferri, Charge dynamics in aluminum oxide thin film studied by ultrafast scanning electron microscopy, Ultramicroscopy 187, 93–7 (2018). https://doi.org/10.1016/j.ultramic.2018.01.010. M.W.H. Garming, I.G.C. Weppelman, M. Lee, T. Stavenga, J.P. Hoogenboom, Ultrafast scanning electron microscopy with sub-micrometer optical pump resolution, Appl. Phys. Rev. 9(2), 021418 (2022). https://doi.org/10.1063/5.0085597. [9] W. Han, M. Zheng, A. Banerjee, Y.Z. Luo, L. Shen, A. Khursheed, Quantitative material analysis using secondary electron energy spectromicroscopy, Sci. Rep. 10(1), 22144 (2020). https://doi.org/10.1016/j.mtadv.2019.100012.
Silvia Picozzi	New trends in ferroelectricity
Proposers Silvia Picozzi (CNR-SPIN, Chieti, Italy), Elena Buixaderas (Institute of Physics of the Czech Republic), Rui Vilarinho (Faculdade de Ciências da Universidade do porto), Joaquim Agostinho Moreira (Faculdade de Ciências da Universidade do Porto) Abstract After more than 100 years, ferroelectricity recovers an important place in Condensed Matter Physics, due to the significant discoveries and technological applications that have been recently demonstrated in these materials. Fundamental topics are still matter of intense research, as it is the case of magnetically-driven ferroelectricity or polar correlations in low-dimensional systems. Meanwhile , new phenomena, where ferroelectricity plays a key role in the functional properties, have been discovered as in low-dimensional ferroelectric oxide superlattices with exotic topological structures. The purpose of this minicolloquium is to present and discuss the new trends in ferroelectrics and related materials, from both experimental and theoretical points of view, share ideas and current knowledge, and expand the scope of future research towards advanced technologies based on artificial structures. The mini-colloquium will address: 1. Ferroelectricity, antiferroelectricity, symmetry aspects and critical phenomena 2. Multiferroic materials and geometric ferroelectricity 3. Emergent topologies in ferroelectrics (polar vortices/skyrmions, nanopolar regions) 4. New functionalities in ferroelectric materials The minicolloquium will be organized into 3 slots addressing: i) fundamentals of ferroelectrics and related materials; ii) multiferroics and geometric ferroelectricity and iii) topologies in ferroelectrics. For each topic, researchers are encouraged to apply for theory, experiment and functionalities, as well. The proposed minicolloquium aims to encourage the participation of well-known high-level scientists, who will be invited to present talks on their own theme/subject of research within this topic. The sessions are opened to all researchers, who have already carried out work on this field and, in particular, to young scientists. The minicolloquium also aims at providing open discussions and strengthening future scientific collaborations among participants. References 1. A new era in ferroelectrics. S. Das, Z. Hong, M. McCarter, P. Shafer, Yu-Tsun Shao, D. A. Muller, L. W. Martin, and R. Ramesh. APL Mater. 8, 120902 (2020) 2. Observation of room-temperature polar skyrmions. S. Das, Y. L. Tang, Z. Hong, M. A. P. Gonçalves, M. R. McCarter, C. Klewe, K. X. Nguyen, F. Gómez-Ortiz, P. Shafer, E. Arenholz, V. A. Stoica, S.-L. Hsu, B. Wang, C. Ophus, J. F. Liu, C. T. Nelson, S. Saremi, B. Prasad, A. B. Mei, D. G. Schlom, J. Íñiguez, P. García-Fernández, D. A. Muller, L. Q. Chen, R. Ramesh. Nature volume 568, 368–372 (2019). 3. Steep-slope hysteresis-free negative capacitance MoS2 transistors. Mengwei Si, Chun-Jung Su, Chunsheng Jiang, Nathan J Conrad, Hong Zhou, Kerry D Maize, Gang Qiu, Chien-Ting Wu, Ali Shakouri, Muhammad A Alam, Peide D Ye. Nat Nanotechnol. 13, 28 (2018). 4. Local negative permittivity and topological phase transition in polar skyrmions. S. Das, Z. Hong, V. A. Stoica, M. A. P. Gonçalves, Y. T. Shao, E. Parsonnet, E. J. Marksz, S. Saremi, M. R. McCarter, A. Reynoso, C. J. Long, A. M. Hagerstrom, D. Meyers, V. Ravi, B. Prasad, H. Zhou, Z. Zhang, H. Wen, F. Gómez-Ortiz, P. García-Fernández, J. Bokor, J. Íñiguez, J. W. Freeland, N. D. Orloff, R. Ramesh. Nature Materials 20, 194 (2021).
Maria Chamarro	Halide perovskites advances, new challenges and perspectives
Proposers Maria Chamarro (Institut de Nanosciences de Paris, Paris, (France)), Annamaria PETROZZA (Instituto Italiano di Tecnologia (ITT), Genova, (Italy)), Paulian PLOCHOCKA (Laboratoire National de Champs Magnetiques Intenses, (LNMCI )Toulouse (France)) Abstract In last years, organic and inorganic lead halide perovskites have shown a great versatility in wide spectrum of applications, starting from low-cost solar cells and covering a large variety of optoelectronic technologies such as light-emitting diodes, lasers and photo-detectors or extending their potentialities to domains so different as spintronics or quantum optics and quantum information. Polycrystalline films obtained by wet solution methods are the most current format for these materials due to their success in photovoltaic applications, but recent progress in growth methods leads to a more diverse range of materials as low-dimensional or bulk crystals. To overcome the technological obstacles associated with the presence of lead or the low chemical stability of perovskites, efforts have been developped to replace lead and to encapsulate or inherently make these materials more stable. Finally, modern simulation techniques such as machine learning are called upon to provide valuable information on the ideal match between the desired application and the composition of the material. The success history of this semiconductor family is due to the fact that they combine unique properties: an emission energy that can be chosen from the infrared region to the blue region of the electromagnetic spectrum, a relative defect tolerance, strong absorption, tunable excitonic properties according to the applications, strong spin-orbit coupling, relatively small carrier effective masses, and large electron and hole diffusion lengths… Nevertheless, many physico-chemical properties remain to be explored and understood due to the unique characteristics of halide perovskites. The aim of this mini-colloquium is to bring together researchers working in halide perovskite materials from a wide range of different disciplines of condensed matter, including material and interface science, electronics, light-matter interactions and photonics, spin physics and devices engineering. References Best research-cell efficiency chart, https://www.nrel.gov/pv/cell-efficiency.html Dey A, et al. “ State of the Art and Prospects for Halide Perovskite Nanocrystals” ACS Nano 15, 10775-10981, (2021), DOI:10.1021/acsnano.0c08903 Ke WJ et al. « Unleaded »perovskites :status quo and future prospects on tin-based perovskite solar cells »Advances Materials 31, SI, (2019), DOI :10.1002/adma.201803230. Wei, HT et al « Halide lead perovskites for ionizing radiation detection », Nature Comm, 10, 1066, (2019). DOI : 10.1038/s41467-019-08981-w. Baranowski M et al « Excitons in metal-halide perovskites » Advanced Energy Materials 10 (26), 1903659, (2020). DOI : 10.1002/aenm.201903659. S.G. Motti et al « Defect activity in lead halide perovskites » Advances Materials 31, 1901183, (2019). DOI: 10.1002/adma.201901183. Ramade, J. et al. Exciton-phonon coupling in CsPbBr3 single nanocrystals” Applied Physics Lett. 112, 072104, (2018). DOI: 10.1063/1.5018413.
Riccardo Rurali	Heat transport in solids
Proposers Riccardo Rurali (Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)), Ilaria Zardo (University of Basel), Dario Narducci (Università di Milano - Bicocca) Abstract Heat transport is becoming increasingly important in several areas of condensed mater physics and its study conveys both a fundamental and applied scientific interest. Recent years have witnessed an enormous progress in the growth and design of nanostructures and now materials with unprecedented level of purity and structural quality are available. Present experimental capabilities are such that nanostructured features of the same characteristic length of phonons —the quantized vibrations of the crystal lattice, responsible for heat transport in semiconductors and insulators—can be obtained. This enhanced degree of control in material design opens the way to many novel strategies to control and manipulate phonon transport. The thermal conductivity of a material can be purposely suppressed, to engineer an efficient thermoelectric. Also, thermal budget, which otherwise can limit the performances of novel nanoelectronic devices, can be lowered by designing materials with very high thermal conductivity. Finally, phonons can be used to encode logic functions in devices analogous to their electronic counterparts, such as diodes and transistors, and periodic superstructures can be used to selectively suppress phonons with frequencies within a specific range. The goal of this Mini-Colloquium is showcasing some of the most promising achievements in the field, promoting collaborations and bringing together both experimentalists and theoreticians working on these topics. References N. Li, J. Ren, L. Wang, G. Zhang, P. Hänggi, and B. Li, Phononics: Manipulating heat flow with electronic analogs and beyond, Rev. Mod. Phys. 84, 1045 (2012), http://doi.org/10.1103/RevModPhys.84.1045 M. Maldovan, Sound and heat revolutions in phononics, Nature 503, 209 (2013), https://doi.org/10.1038/nature12608 S. R. Sklan, Splash, pop, sizzle: Information processing with phononic computing, AIP Advances 5, 053302 (2015), https://doi.org/10.1063/1.4919584 S. Volz et al., Nanophononics: state of the art and perspectives, Eur. Phys. J. B 89, 15 (2016), https://doi.org/10.1140/epjb/e2015-60727-7 M. Terraneo, M. Peyrard, and G. Casati, Controlling the Energy Flow in Nonlinear Lattices: A Model for a Thermal Rectifier, Phys. Rev. Lett. 88, 094302 (2002), https://doi.org/10.1103/PhysRevLett.88.094302 L. D. Hicks and M. S. Dresselhaus, Thermoelectric figure of merit of a one-dimensional conductor, Phys. Rev. B 47, 16631-16634 (1993), https://doi.org/10.1103/PhysRevB.47.16631 G. Benenti, G. Casati, K. Saito, and R. S. Whitney, Fundamental aspects of steady-state conversion of heat to work at the nanoscale, Physics Reports 694, 1 (2017), https://doi.org/10.1016/j.physrep.2017.05.008
Milena Majkic	Ion beam induced morphological alteration of materials: experiments, theoretical models and simulations
Proposers Milena Majkic (Faculty of Technical Sciences, University of Pristina, Kosovska Mitrovica, Serbia), Michele Amato (Laboratoire de Physique des Solides, Université Paris-Saclay, CNRS, Orsay 91405, France) Abstract Alteration of materials morphology in a controllable manner together with the modification of their structural, electronic, mechanical, magnetic, thermal, and optical properties can be induced by different ion beam techniques such as ion implantation, focused ion beams, highly charged ion and swift heavy ion irradiation. The specific ion-surface combination in a defined energy regime and processing conditions leads to defect production, sputtering of material and changes in material surface morphology. The response of the material on the individual ion impact are different types of surface nanostructures, such as hillocks, craters, pores, and amorphous nanometric tracks. This is particularly true in the case of two-dimensional materials, where exposure to mechanical deformation could result in a noticeable modification of their electrical and optical properties. The application of modified materials has been already exploited in many industrial processes such as ion-track nanotechnology, generation of nanopores in polymers, controlled drug delivery in biomedicine, etc. Modified 2D materials have applications in nanoelectronics, optoelectronics, spintronics etc. This Mini-colloquium aims to provide an in-depth overview of the current status of understanding the modifications of structural, electronic, mechanical, magnetic, thermal, and optical properties of different types of materials (bulk and low dimensional structures) under ion beam irradiation, including both experiments and atomistic modelling contributions. The scope of the Mini-colloquium will cover all aspects of fundamental experimental and theoretical research related to ion beam technology for material modification (from bulk to low-dimensional structure) such as ion implantation, ion channelling, highly charged and swift heavy ion irradiation. Particular attention will be devoted to the modification of electrical and optical properties of two-dimensional materials under mechanical deformations. References 1. Alexander Sagar Grossek, Anna Niggas, Richard A. Wilhelm, Friedrich Aumayr, and Christoph Lemell, Model for Nanopore Formation in Two-Dimensional Materials by Impact of Highly Charged Ions, Nano Letters 2022 22 (23), 9679-9684, https://doi.org/10.1021/acs.nanolett.2c03894 2. Sophie Eve, Alexis Ribet , Jean-Gabriel Mattei , Clara Grygiel , Eric Hug , Isabelle Monnet, Structural and mechanical modifications of GaN thin films by swift heavy ion irradiation, Vacuum 195 (2022) 110639, https://doi.org/10.1016/j.vacuum.2021.110639 3. Alba Salvador-Porroche, Lucía Herrer, Soraya Sangiao, Patrick Philipp, Pilar Cea, and José María De Teresa, High-Throughput Direct Writing of Metallic Micro- and Nano-Structures by Focused Ga+ Beam Irradiation of Palladium Acetate Films, ACS Appl. Mater. Interfaces 2022, 14, 24, 28211–28220, https://doi.org/10.1021/acsami.2c05218 4. Hanžek, J.; Dubček, P.;Fazinić, S.; Tomić Luketić, K.;Karlušić, M., High-Energy Heavy Ion Irradiation of Al2O3, MgO and CaF2, Materials 2022, 15, 2110. https://doi.org/10.3390/ma15062110 5. A. Impellizzeri, M. Amato, C.P. Ewels, A. Zobelli,Electronic structure of folded hexagonal boron nitride J. Phys. Chem. C 2022, 126, 41, 17746–17752, https://doi.org/10.1021/acs.jpcc.2c05549 6. Mario Khoury and Marco Abbarchi “A bright future for silicon in quantum technologies featured” Journal of Applied Physics 2022 131, 200901, https://doi.org/10.1063/5.0093822 7. Yoann Baron, Alrik Durand, Péter Udvarhelyi, Tobias Herzig, Mario Khoury, Sébastien Pezzagna, Jan Meijer, Isabelle Robert-Philip, Marco Abbarchi, Jean-Michel Hartmann, Vincent Mazzocchi, Jean-Michel Gérard, Adam Gali, Vincent Jacques, Guillaume Cassabois, and Anaïs Dréa, “Detection of Single W-Centers in Silicon”, ACS Photonics 2022, 9, 7, 2337–2345, https://doi.org/10.1021/acsphotonics.2c00336 8. Mukesh Tripathi, Alexander Markevich, Roman Böttger, Stefan Facsko, Elena Besley, Jani Kotakoski, and Toma Susi, “Implanting Germanium into Graphene” ACS Nano 2018, 12, 5, 4641–4647, https://doi.org/10.1021/acsnano.8b01191 9. Andrea E. Sand, Rafi Ullah & Alfredo A. Correa, “Heavy ion ranges from first-principles electrondynamics”,npj ComputationalMaterials 5, 43 (2019), https://doi.org/10.1038/s41524-019-0180-5
Francesco Rossella	Nanodevice Iontronics
Proposers Francesco Rossella (University of Modena and Reggio Emilia) Abstract IONTRONICS targets the control of electrical properties and functionality of electronic devices by exploiting ionic motion and arrangement, and represents an interdisciplinary field encompassing electrochemistry, solid-state physics, energy storage, electronics, and biological sciences. A key element driving the functionality of iontronic devices is the electric double layer (EDL) formed at the interface between an (electronically insulating) ionic conductor and an electronic conductor, e.g. an inorganic semiconductor. In this context, the use of IONIC LIQUIDS (ILs, salts in the liquid state at 300 K) for the realization of EDL transistors (EDLTs) was shown to yield very high local electric fields and efficient carrier-density modulation, and was recently applied to nanomaterials including 2D SYSTEMS (graphene, layered TMDs) as well as QUASI-1D SYSTEMS (nanowires, nanotubes). Unprecedented gating efficiency and gate-induced change of the temperature behavior in semiconductor nanodevices have been reported; the IL dynamics in nanodevices has been investigated with atomistic simulations, correlating the transport features to the microscopic parameters of the soft-matter system; Innovative device architectures were envisioned, exploiting the electric double layer gating for thermal management and energy harvesting at the nanoscale. NANODEVICE IONTRONICS AIMS AT presenting the most recent results achieved by the interdisciplinary community working on nanoscale electric double layer transistors. References D. Prete, E. Dimaggio, V.Demontis, V. Zannier, M.-J. Rodriguez Douton, L. Guazzelli, F. Beltram, L. Sorba, G. Pennelli, and F. Rossella*, Electrostatic control of the thermoelectric figure of merit in ion-gated nanotransistors, Adv. Funct. Mat. 2021, 31, 2104175
Paolo Milani	New insights on emerging materials and concepts for neuromorphic computing
Proposers Paolo Milani (Università degli Studi di Milano, Italy), Sabina Spiga (CNR-IMM, Unit of Agrate Brianza , Italy), Regina Dittmann (Forschungszentrum Jülich, Germany) Abstract Neuromorphic computing (NC) aims at reproducing the mammalian brain performances in terms of classification, pattern recognition, and energy efficiency by exploiting the complexity originating from various classes of materials and physical substrates composed of a large number of non-linear nanoscale junctions [1,2]. NC has received a significant boost by exploiting the nanoscale electrical conduction mechanisms of various memristive devices as new hardware building blocks able to reproduce neuron and synaptic behaviour [3-6]. Memristors can enable ‘in memory computing’ in neural networks, thus avoiding the energy cost associated to data transfer between the memory and the processor, and then surpassing the limit of the current von-Neumann computing architecture [5]. Systems obtained by the random-assembling of nano-objects like nanoparticles and nanowires also show functional synaptic connectivity with nonlinear dynamics [7-9]. The development of design-less nano-objects offers powerful brain-inspired computing capabilities and the possibility of investigating critical dynamics in complex adaptive systems. All the mentioned approaches are attracting the interest from materials science, solid state physics, electronic engineering, neurobiology. The proposed mini-colloquium will address emerging materials and concepts for the development of brain-inspired hardware. In particular, the colloquium will foster an interdisciplinary discussion on the following topics: (i) materials systems/devices (such as, but not limited to: phase change materials, redox-based memristors, ferroelectric oxides, nanowire networks, disordered systems, organic materials, magnetic skyrmions, flexible memristive devices); (ii) in-situ and in operando characterization tools to elucidate the microscopic physical and chemical processes underlying neuromorphic systems; (iii) theory and simulation addressed to the understanding of physical mechanisms that can be exploited for NC. References 1) Dennis V Christensen et al., 2022 roadmap on neuromorphic computing and engineering, Neuromorph. Comput. Eng. 2, 022501 (2022); https://doi.org/10.1088/2634-4386/ac4a83 2) A. Mehonic, A. J. Kenyon, Brain-inspired computing needs a master plan. Nature 604, 255–260 (2022); https://doi.org/10.1038/s41586-021-04362-w 3) R. Dittmann, S. Menzel and R. Waser, Nanoionic memristive phenomena in metal oxides: the valence change mechanism, Advances in Physics 70(2), 155-349 (2022), https://doi.org/10.1080/00018732.2022.2084006 4) S Brivio, S. Spiga and D. Ielmini, HfO2-based resistive switching memory devices for neuromorphic computing, Neuromorph. Comput. Eng. 2 042001 (2022), https://iopscience.iop.org/article/10.1088/2634-4386/ac9012/meta 5) M. Lanza et al., Memristive technologies for data storage, computation, encryption, and radio-frequency communication, Science 376, 6597 (2022), https://www.science.org/doi/abs/10.1126/science.abj9979 6) T. Heisig, et al., Chemical Structure of Conductive Filaments in Tantalum Oxide Memristive Devices and Its Implications for the Formation Mechanism, Adv. Electron. Mater. 2022, 8, 2100936 (2022); https://doi.org/10.1002/aelm.202100936 7) G. Milano et al., In materia reservoir computing with a fully memristive architecture based on self-organizing nanowire networks, Nat. Mater. 21, 195–202 (2022); https://doi.org/10.1038/s41563-021-01099-9 8) Hans-Christian Ruiz-Euler et al., Dopant network processing units: towards efficient neural network emulators with high-capacity nanoelectronic nodes, Neuromorph. Comput. Eng. 1, 024002 (2021), https://iopscience.iop.org/article/10.1088/2634-4386/ac1a7f 9) Matteo Mirigliano & Paolo Milani, Electrical conduction in nanogranular cluster-assembled metallic films, Advances in Physics: X, 6:1, 1908847 (2021), https://doi.org/10.1080/23746149.2021.1908847
Linda Angela Zotti	Charge transport in molecules and biosystems at different scales: going beyond traditional electronics
Proposers Linda Angela Zotti (Universidad Autónoma de Madrid), Edmund Leary (IMDEA Nanociencia), Eleonora Alfinito (Universitá del Salento) Abstract The problem of the shortage of semiconductors and rare-earth elements, especially in Europe, puts enormous pressure on many industries which, ultimately, causes lower availability leading to higher prices for consumers. This is driving development of alternatives to silicon-based devices in order to reduce the dependency on the limited, external, sources of traditional chips. With this perspective in mind, organic-based materials offer the potential to make a wide range of electronic components which could complement traditional electronic materials, such as transistors, switches, diodes and thermoelectric modules, potentially even adding greater functionality. This includes biosystems, such as proteins, bacteria, DNA and peptides, as well as small organic compounds measuring just a few nanometers. For this to become reality, ongoing studies at both the nanoscale and microscale must ideally be brought together. On the one hand, the study of charge transport at the nanoscale investigates processes involving, commonly, single entities like molecules, proteins and bacteria, as well as monolayers. Due to the size, these systems are also great testbeds for the study of quantum effects, like quantum tunneling and quantum interference, which is where additional functionality may arise. On the other hand, the study of the charge flow through complex networks consisting of arrays of these systems deals with charge transport over a wider range of distances, from a few Angströms to tens of nanometers. Both areas can mutually benefit each other, and ultimately cross-over knowledge will be extremely valuable for the future realization of novel devices. The aim of this mini-colloquium is to bring together the two, normally separate, communities and provide a common platform for the sharing of knowledge, both within the respective fields, and between the two. References 1.“Molecular Electronics: An Introduction to Theory and Experiment”, J.C. Cuevas and E. Scheer, World Scientific Publishers (2017) 2. “Charge transport at the protein–electrode interface in the emerging field of BioMolecular Electronics”, Current Opinion in Electrochemistry 28, 100734 (2021), https://doi.org/10.1016/j.coelec.2021.100734 3. “Can Electron Transport through a Blue-Copper Azurin Be Coherent? An Ab Initio Study”, Carlos Romero-Muñiz, María Ortega, J.G Vilhena, Ismael Díez-Pérez, Rubén Pérez, Juan Carlos Cuevas, Linda A. Zotti, J. Phys. Chem. C , 125, 3, 1693–1702 (2021), https://doi.org/10.1021/acs.jpcc.0c09364 4. “Electronic Transport via Proteins”, Amdursky, N.; Marchak, D.; Sepunaru, L.; Pecht, I.; Sheves, M.; Cahen, D.. Adv. Mater. 2014, 26, 7142−7161, https://doi.org/10.1002/adma.201402304 5. “Backbone charge transport in double-stranded DNA”, Roman Zhuravel, Haichao Huang, Georgia Polycarpou, Savvas Polydorides, Phani Motamarri, Liat Katrivas, Dvir Rotem, Joseph Sperling, Linda A Zotti, Alexander B Kotlyar, Juan Carlos Cuevas, Vikram Gavini, Spiros S Skourtis, Danny Porath, Nature Nanotechnology volume 15, pages 836–840 (2020), https://doi.org/10.1038/s41565-020-0741-2 6. “A Peierls Transition in Long Polymethine Molecular Wires: Evolution of Molecular Geometry and Single-Molecule Conductance”, Wenjun Xu, Edmund Leary, Sara Sangtarash, Michael Jirasek, M Teresa González, Kirsten E Christensen, Lydia Abellán Vicente, Nicolás Agraït, Simon J Higgins, Richard J Nichols, Colin J Lambert, Harry L Anderson, J. Am. Chem. Soc. 2021, 143, 48, 20472–20481, https://doi.org/10.1021/jacs.1c10747 7. “Bacteriorhodopsin (bR) as an electronic conduction medium: Current transport through bR-containing monolayers” Jin, Y., Friedman, N., Sheves, M., He, T., & Cahen,D., Proceedings of the National Academy of Sciences, 103(23), 8601-8606 (2006), https://doi.org/10.1073/pnas.051123410 8. “Projecting the nanoworld: Concepts, results and perspectives of molecular electronics.” Maruccio, G., Cingolani, R., & Rinaldi, R. Journal of Materials Chemistry, 14(4), 542-554 (2004), https://doi.org/10.1039/B311929G 9. Charge transport in bacteriorhodopsin monolayers:The contribution of conforma-tional change to current-voltage characteristics”, Alfinito, E., & Reggiani, L.. EPL (Euro-physics Letters), 85(6), 68002 (2009), DOI 10.1209/0295-5075/85/68002
Carsten Henkel	Photodeformable polymer films: materials, methods, models, applications
Proposers Carsten Henkel (University of Potsdam, Institute of Physics and Astronomy, Potsdam, Germany), Stefano Luigi Oscurato (University of Naples “Federico II”, Department of Physics “E. Pancini”, Naples, Italy), Svetlana Santer (University of Potsdam, Institute of Physics and Astronomy, Potsdam, Germany) Abstract Certain organic dyes efficiently switch between trans and cis isomers under visible/UV irradiation. If these photosensitive units are embedded in a host material, its physical and mechanical properties are significantly altered. Experiments have highlighted birefringence patterns linked to the local optical polarisation, persistent over hours and longer. Particularly intriguing is the mechanical deformation of thin films under irradiation, that is also permanent in the dark, but can be reconfigured with suitably polarised irradiation patterns. The energetics of the molecular orientation process, but also changes in visco-elastic moduli are likely to play a role when films become corrugated with an amplitude comparable to their thickness. The mini-colloquium aims at uniting material scientists interested in glassy materials and liquid crystalline elastomers, in holographic information storage, and in probing material orientation and deformation in real time. This interdisciplinary topic would benefit a lot from insight into the key features that make this photomechanical behaviour happen, with applications in photonics, biology, surface engineering and robotics. References Stefano L. Oscurato, Francesco Reda, Marcella Salvatore, Fabio Borbone, Pasqualino Maddalena, and Antonio Ambrosio, Shapeshifting Diffractive Optical Devices, Laser & Photon. Rev. 16 (2022) 2100514. https://doi.org/10.1002/lpor.202100514 Bharti Yadav, Jan Domurath, Kwangjin Kim, Seungwoo Lee, and Marina Saphiannikova, Orientation Approach to Directional Photodeformations in Glassy Side-Chain Azopolymers, J. Phys. Chem. B 123 (2019) 3337. https://doi.org/10.1021/acs.jpcb.9b00614 P. Pagliusi, B. Audia, C. Provenzano, M. Piñol, L. Oriol, and G. Cipparrone, Tunable Surface Patterning of Azopolymer by Vectorial Holography: The Role of Photoanisotropies in the Driving Force, ACS Appl. Mater. Interfaces 11 (2019) 34 471. https://doi.org/10.1021/acsami.9b12624 Joachim Jelken, Carsten Henkel, and Svetlana Santer, Polarization controlled fine structure of diffraction spots from an optically induced grating, Appl. Phys. Lett. 116 (2020) 051601. https://doi.org/10.1063/1.5140067 Zahid Mahimwalla, Kevin G. Yager, Jun-ichi Mamiya, Atsushi Shishido, Arri Priimagi, and Christopher J. Barrett, Azobenzene photomechanics: prospects and potential applications, Polymer Bull. 69 (2012) 967-1006. https://doi.org/10.1007/s00289-012-0792-0 G. Pawlik, A. Miniewicz, A. Sobolewska, and A. C. Mitus, Generic stochastic Monte Carlo model of the photoinduced mass transport in azo-polymers and fine structure of Surface Relief Gratings, Europhys. Lett. 105 (2014) 26002. https://doi.org/10.1209/0295-5075/105/26002 Aleksandra Korbut, Sonia Zielińska, Regis Barille, Jacek Pigłowski, and Ewelina Ortyl, The novel photoresponsive oligomers containing azo derivatives of sulfamerazine for spontaneous surface relief grating inscription, Eur. Polym. J. 90 (2017) 392. https://doi.org/10.1016/j.eurpolymj.2017.03.024 Matthew Hendrikx, Albertus P. H. J. Schenning, and D. J. Broer, Patterned oscillating topographical changes in photoresponsive polymer coatings, Soft Matter 13 (2017) 4321. https://doi.org/10.1039/C7SM00699C
Davide Sangalli	Exciton dynamics and transport in quantum materials
Proposers Davide Sangalli (Istituto di Struttura della Materia - CNR), Stefania Pagliara (Università Cattolica del Sacro Cuore di Brescia), Alejandro Molina-Sanchez (Universitat de València) Abstract Excitons are central to a wide range of opto-electronic applications and next-generation devices, from photovoltaics and photocatalysis, to tunable light-emitting diodes, lasing and photon emitters for quantum information. Understanding their non-equilibrium dynamics is the key to many of these applications. In recent years, advanced time-resolved techniques have been used to study excited-state phenomena in layered semiconductors, organic molecular crystals, or organic-inorganic hybrids. These systems often host strongly-bound excitons. A wealth of physical processes and quantum phenomena can be explored, such as topological states, Floquet physics, coherent exciton Bose-Einstein condensation, and Exciton-Mott transition. In the early time-regime, coherent light−matter coupling can manifest through the dynamical Stark and Franz-Keldysh effects. Non coherent decay channels such Auger recombination, exciton-exciton annihilation, and exciton-phonon scattering dictate the excitons lifetime. Laser injected excitons can decay into finite momentum dark states. Excitonic complexes such as biexcitons, trions, and exciton-polarons can be involved in the process. The understanding of these experiments requires advanced theoretical and computational methods. Dissipative mechanisms can be accounted for by non coherent rate equations. Coherent dynamics instead requires more fundamental approaches based on quantum equations. Two main challenges need to be tackled: (i) combine these approaches with accurate description of the materials properties; (ii) describe the transition from the coherent to the non coherent regime. The goal of this mini-colloquium is to bring together researchers from different scientific communities, who study time-resolved exciton phenomena in functional materials. Within a joint cross-community meeting, we wish to encourage exchange of ideas and identify emerging questions for future research directions and collaborations. References [1] T. Mueller, and E. Malic, NPJ 2D Materials and Applications 2, 1 (2018) Exciton physics and device application of two-dimensional transition metal dichalcogenide semiconductors https://doi.org/10.1038/s41699-018-0074-2 [2] H.-Y. Chen, D. Sangalli, and M. Bernardi, Phys. Rev. Lett. 125, 107401 (2020) Exciton-Phonon Interaction and Relaxation Times from First Principles https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.107401 [3] E. Perfetto, Y. Pavlyukh, and G. Stefanucci, Phys. Rev. Lett. 128, 016801 (2022) Real-Time GW: Toward an Ab Initio Description of the Ultrafast Carrier and Exciton Dynamics in Two-Dimensional Materials https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.128.016801 [4] Maciej Dendzik et al., Phys. Rev. Lett. 125, 096401 (2020) Observation of an Excitonic Mott Transition through Ultrafast Core-cum-Conduction Photoemission Spectroscopy https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.096401 [5] S. Mor et al., Phys. Rev. Research 3, 043175 (2021) Photoinduced modulation of the excitonic resonance via coupling with coherent phonons in a layered semiconductor https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.0... [6] C. Trovatello et al., ACS Nano 2020, 14, 5700 (2020) Strongly Coupled Coherent Phonons in Single-Layer MoS2 https://doi.org/10.1021/acsnano.0c00309 [7] M. Lucchini et al., Science 353, 916 (2016) Attosecond dynamical Franz-Keldysh effect in polycrystalline diamond https://www.science.org/doi/10.1126/science.aag1268 [8] E. J. Sie et al., Nature Materials 14, 290 (2015) Valley-selective optical Stark effect in monolayer WS2 https://www.nature.com/articles/nmat4156 [9] O. Karni et al., Nature 603, 247 (2022) Structure of the moiré exciton captured by imaging its electron and hole https://www.nature.com/articles/s41586-021-04360-y
Alberto Scaccabarozzi	New frontiers of organic electronics
Proposers Alberto Scaccabarozzi (Istituto Italiano di Tecnologia), Adrica Kyndiah (Istituto Italiano di Tecnologia), Simone Fabiano (Linköping University), Esma Ismailova ( Ecole des Mines de Saint-Etienne) Abstract Organic semiconductors (OSCs) are an emerging class of materials for next-generation electronics, with countless applications including displays, electronic circuits, energy harvesting, sensors and biomedicine. Despite they do not aim to replace silicon technologies for certain applications (e.g., high performance microprocessors), they are candidate to have a key role in the pervasive integration of electronic devices in all sorts of appliances that is progressively occurring in our society. Indeed, the field of organic electronics has been forging ahead from its initial patchy physical/chemical knowledge and proof-of-concept devices, towards increasingly diverse applications and solid understanding. This mini-colloquium aims to bring together the broad, interdisciplinary expertise within the organic electronics community, elucidating the novel frontiers in the field. In particular, it will focus on the most promising directions of organic transistor technologies. It will therefore encompass the recent progress in the understanding of physical processes in organics and the implications in the device physics of transistors. It will discuss the chemical strategies, processing, design and fabrication efforts for the achievement of suitable OSCs and devices for the novel challenges of the field. Specific topics to be covered by the mini-colloquia: • Organic field-effect, electrolyte-gated, electrochemical transistors and circuits • Printed Electronics • Environmental sustainability of printed organic electronics • Novel materials strategies • Innovative fabrication routes and design for high-performance devices • Edible electronics • Bioelectronics and biosensors • Neuromorphic electronics • Wearable Electronics References • Green Materials and Technologies for Sustainable Organic Transistors, DOI: 10.1002/admt.202100445 • Semiconducting Polymers for Neural Applications, https://doi.org/10.1021/acs.chemrev.1c00685 • Edible Electronics: The Vision and the Challenge, https://doi.org/10.1002/admt.202000757 • 14 GHz Schottky Diodes Using a p-Doped Organic Polymer, https://doi.org/10.1002/adma.202108524 • Ion-tunable antiambipolarity in mixed ion–electron conducting polymers enables biorealistic organic electrochemical neurons, https://doi.org/10.1038/s41563-022-01450-8 • Organic electrochemical neurons and synapses with ion mediated spiking, https://doi.org/10.1109/NER49283.2021.9441285 (2021) • Electrolyte-gated transistors for enhanced performance bioelectronics, https://doi.org/10.1038/s43586-021-00065-8 • Interfacing cells with organic transistors: a review of in vitro and in vivo applications, https://doi.org/10.1039/D0LC01007C
Plasma physics
Daniela Grasso	Italian Plasma Physics
Proposers Daniela Grasso (CNR - Istituto dei Sistemi Complessi), Matteo Passoni (Politecnico di Milano), Franco Porcelli (Politecnico di Torino) Abstract The idea of this mini-colloquium is to provide an overview of the activities of Italian academic and research institutions at the frontiers of plasma physics. The Italian plasma physics community has broad interests ranging from astrophysics, including relativistic plasmas, to nuclear fusion energy, via non-neutral and industrial plasmas. The implications of space weather forecasting for climate, GPS, and satellite communications makes studies of solar and astrophysical plasmas of paramount importance. Laboratory plasmas are also in the spotlight for inertial and magnetic confinement experiments for the role they can play in achieving an unlimited, carbon-free energy source. Plasmas are also being studied for their industrial applications, such as surface treatment of materials or satellite propulsion. References
Soft and glassy matter
Laurence Ramos	Soft matter and environmental challenges
Proposers Laurence Ramos (CNRS & U. Montpellier, France), Nuno Araujo (Lisbon University, Portugal), Emanuela Zaccarelli (Sapienza University of Rome, Italy), Anna Stradner (Lund University, Sweden) Abstract Soft matter includes a large variety of materials, typically composed of polymers, colloids, surfactants, liquid crystals, and other mesoscopic constituents. These materials are grouped together and called soft matter because of their ability to easily deform and more generally their extreme susceptibility to various external fields. Soft matter impacts every aspect of our day-to-day life. We encounter such materials in the form of plastic bags, toothpaste and shaving foam, liquid crystals in LCD screens, automotive lubricants, “slimy” biological materials, etc. Soft condensed matter being at the cross-roads between physics, chemistry, biology, engineering and material science is adequately positioned to address questions related to environmental challenges. Relevant domains include among others biomass valorization, design of more environment-friendly materials and processes, the rational design of novel vegan foods to help the necessary food transition from a diet rich in animal-based ingredients to a diet enriched in plant-based ingredients, or the development of new processes and devices for non-carbon energy capture and remediation. The scope of the minicolloquium is to bring together all scientists who belong to the broad soft condensed matter community and its interfaces and whose research contributes to a rational understanding and design of approaches, tools and materials for the development of a more sustainable future. We anticipate that the minicolloquium will be the occasion to make a rather exhaustive inventory of the research conducted in the field of soft matter in relation to the environmental challenges that the world is currently facing. This Minicolloquium is proposed by the Soft Condensed Matter and Biophysics section of the CMD: Mikko Alava (Aalto University, Finland), Nuno Araujo, Secretary (Lisbon University, Portugal), Daniela Kraft (Leiden University, The Netherlands), Catherine O'Sullivan (Imperial College London, UK), Laurence Ramos, Chair (CNRS&Montpellier University, France), Anna Stradner (Lund University, Sweden), Dimitris Vlassopoulos (Forth, Greece), Emanuela Zaccarelli (Sapienza University of Rome, Italy). References
Philip Born	Scattering and Light Propagation in Disordered Soft Matter
Proposers Philip Born (Institute of Materials Physics in Space, Deutsches Zentrum für Luft- und Raumfahrt, Linder Höhe, D-51147 Cologne, Germany), Andrea Bassi (Department of Physics, Politecnico di Milano, piazza Leonardo da Vinci 32, I-20133 Milan, Italy), Luca Cipelletti (Laboratoire Charles Coulomb (L2C), Université Montpellier, Campus Triolet, Place Eugène Bataillon - CC069, F-34095 Montpellier Cedex 5, France) Abstract This mini-colloquium deals with recent advances in the research field of wave propagation in random media. This domain covers research on biological and living matter as well as soft materials like colloids, emulsions and foams. Development of diagnostic tools for these classes of condensed matter commonly faces the challenge to extract information from light scattered in disordered media. On the other hand, optics of disordered systems has burgeoned into a prolific research area. Strong local structural correlations and hyperuniformity are studied to reveal or produce novel optical and photonic phenomena in condensed matter. CMD30 – FisMat2023 provides a unique environment to achieve interaction among scientists with broad spectrum of backgrounds (physics, biology and chemistry) that would not have registered for a highly specialized conference. Combination of work on naturally disordered matter and artificially tailored disorder may lead to new approaches for characterization of complex samples, modeling of light propagation or manufacturing of new materials. Topics that shall be discussed in the mini-colloquium: - microscopy and scattering-based diagnostics - amorphous soft solids (gels, glasses, foams, granular media) - biological systems (cells, tissues) - 3D printing of photonic materials - modeling of electromagnetic waves in disordered matter - metrics and measures of disorder References
Superconductivity
Oleksandr Dobrovolskiy	Nonequilibrium phenomena and superconductor 3D nanoarchitectures
Proposers Oleksandr Dobrovolskiy (University of Vienna), Vladimir Fomin (Leibniz IFW Dresden), Gaia Grimaldi (University of Salerno and CNR-SPIN) Abstract Manipulation of topological excitations of the superconducting order parameter at high velocities and confined in 3D nanoarchitectures have become major research tasks in modern superconductivity1,2,3. These dynamic states are determined by the topology of screening currents in superconductors and harbor essential information on the quasiparticle relaxation, underlying the correlated physics of new quantum systems and the applications of superconductors in (electro-)magnetic field sensing, single-photon detection and fluxonic devices. This Session is aimed to bring together leading experts on superconductivity, vortex matter and 3D nanofabrication. The planned contributions will represent topics at the vibrant interface between superconductors physics and materials science. References [1] O. V. Dobrovolskiy, “Fast dynamics of vortices in superconductors”, in “Encyclopedia of Condensed Matter Physics”, 2nd edition, Elsevier, 2023, chap. 9; ISBN 978-0-323-90800-9.00015-9. [2] V. M. Fomin, O. V. Dobrovolskiy, “A perspective on superconductivity in curved 3D nanoarchi- tectures”, Appl. Phys. Lett. 120, 090501 (2022). [3] G. Grimaldi, et al. “Vortex lattice instability at the nanoscale in a parallel magnetic field”, Nanotechnol. 30, 424001 (2019).
Chandan Setty	Phonon driven superconductivity: Anharmonicity and Soft modes
Proposers Chandan Setty (Rice University, USA), Alessio Zaccone (University of Milan), Matteo Baggioli (Shanghai Jiao Tong) Abstract The quest for understanding and achieving high temperature superconductivity is one of the main pillars of condensed matter physics. Much experimental progress has been achieved in the last few years especially with the advent of high pressure techniques to control and optimize superconducting transition temperature (T_c). In parallel, several numerical avenues and simulations have been explored to accurately predict transition temperatures of a wide variety of quantum materials with much focus on phonon-driven superconductors. However, a mechanistic understanding of the interplay of pressure, temperature, phonon anharmonicity, damping and other renormalization effects is missing. Filling this knowledge gap is an urgent problem in order to develop an understanding of superconductivity in emergent materials such as high-pressure materials, ferroelectrics, etc. In this minicolloquium, we plan to bring in a broad range of speakers who can motivate and address these outstanding issues that are at the forefront of quantum material design of superconductors. References https://doi.org/10.1103/PhysRevB.102.174506 https://doi.org/10.1103/PhysRevB.103.094519 https://doi.org/10.1103/PhysRevB.105.L020506 https://doi.org/10.1103/PhysRevB.101.214502 https://doi.org/10.1103/PhysRevB.99.144523 https://doi.org/10.1103/PhysRevLett.114.157004 https://doi.org/10.1103/PhysRevB.89.064302 https://doi.org/10.1038/nature17175
Matteo Carrega	Hybrid superconductor-semiconductor devices for quantum technology applications
Proposers Matteo Carrega (CNR-Spin, Genova, Italy), Szabolcs Csonka (Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary), Stefan Heun (NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy), Nicola Paradiso (Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Regensburg, Germany) Abstract The scope of this mini-colloquium is to share the latest experimental and theoretical progress in the physics of hybrid devices based on superconductor-semiconductor systems, a widely investigated platform for new quantum technologies. In addition, there is a widespread interest in the physics of low-dimensional semiconductors with strong spin-orbit coupling (SOC). These systems offer an ideal platform to coherently control electron spin with great impact in spintronics and topological quantum computing [1,2]. The simultaneous breaking of time-reversal and inversion symmetry can lead to non-reciprocal charge transport. This is at the basis of conventional electronics, where the diode is based on the p-n junction. Only very recently it has been realized that the superconducting analogue of non-reciprocal transport can be made [3,4]. Such systems, showing a supercurrent diode effect (SDE), constitute a breakthrough for superconducting electronics. After the first experimental reports [3,4], several studies on SDE have been pursued very recently. High quality III-V semiconductors with an intrinsic strong SOC, such as InAs or InSb, in presence of sizable superconducting proximity become a natural platform to investigate SDE [4,5]. In addition, SOC together with superconductivity are key ingredients that can lead to the emergence of new states of matter and topological superconductivity [2,6,7]. A semiconductor nanowire with strong SOC in proximity to a superconductor has been predicted to host Majorana zero modes, which are expected to harbor non-Abelian statistics that would constitute a first element towards noise-resilient quantum computation [2,6]. Despite huge efforts in the search for topological signatures, this topic is still on the condensed matter agenda. Recent experimental advances in the realization of synthetic Kitaev chains based on quantum dots coupled via a superconductor open new avenues to realize a topological superconductor platform [8,9]. References [1] D. Bercioux and P. Lucignano, Rep. Prog. Phys. 78, 106001 (2015). https://doi.org/10.1088/0034-4885/78/10/106001 [2] A. Stern and N. H. Lindner, Science 339, 1179 (2013). https://doi.org/10.1126/science.1231473 [3] F. Ando et al., Nature 584, 373 (2020). https://doi.org/10.1038/s41586-020-2590-4 [4] C. Baumgartner et al., Nat. Nanotech. 17, 39 (2022). https://doi.org/10.1038/s41565-021-01009-9 [5] B. Turini et al., Nano Lett. 22, 8502 (2022). https://doi.org/10.1021/acs.nanolett.2c02899 [6] E. Prada et al., Nat. Rev. Phys. 2, 575 (2020). https://doi.org/10.1038/s42254-020-0228-y [7] V. Mourik et al., Science 336, 1003 (2012). https://doi.org/10.1126/science.1222360 [8] G. Wang et al., Nature 612, 448 (2022). https://doi.org/10.1038/s41586-022-05352-2 [9] T. Dvir et al., arXiv:2206.08045 [cond-mat.mes-hall]. https://doi.org/10.48550/arXiv.2206.08045
Roberto Lo Conte	Magnet/superconductor hybrids for quantum information science and technology
Proposers Roberto Lo Conte (University of Hamburg), Angelo Di Bernardo (University of Konstanz), Wolfgang Belzig (University of Konstanz), Carmine Attanasio (Universitá degli studi di Salerno) Abstract The upcoming revolution in information technology driven by quantum computing will require a drastic change in the way we generate, store and process information. However, in order for the quantum information revolution to come true, new quantum materials are needed to make the building blocks of solid state quantum computers. A very promising approach that is receiving much attention recently is represented by hybrid quantum systems, where materials with different properties (magnetism, superconductivity, spin-orbit coupling) are joined together to engineer new hybrid materials with emergent quantum properties, such as topological [1,2] and spin-triplet superconductivity [3-6] which can be used for the implementation of fault tolerant quantum computing [7,8] and the design of superconducting spintronic technologies [9]. This minicolloquium will look at the most promising new ideas in the study of hybrid quantum materials, such as the superconducting diode effect, 1D and 2D Shiba systems and superconducting van der Waals heterostructures, both from a theoretical as well as from an experimental standpoint, and their potential implementation in quantum technologies. References [1] S. Kezilebieke, M. N. Huda, V. Vaňo , M. Aapro , S. C. Ganguli, O. J. Silveira, S. Głodzik, A. S. Foster, T. Ojanen, and P. Liljerot, Nature 588, 424-428 (2020). [2] L. Schneider, P. Beck, T. Posske, D. Crawford, E. Mascot, S. Rachel, R. Wiesendanger, and J. Wiebe, Nat. Phys. 17, 943-948 (2021). [3] J. W. A. Robinson, J. D. S. Witt, M. G. Blamire, Science 329, 59-61 (2010). [4] J. Linder and J. W. A. Robinson, Nat. Phys. 11, 307 (2015). [5] K.-R. Jeon, B. K. Hazra, K. Cho, A. Chakraborty, J.-C. Jeon, H. Han, H. L. Meyerheim, T. Kontos, and S. S. P. Parkin, Nat. Mater. 20, 1358-1363 (2021). [6] H. Alpern, E. Katzir, S. Yochelis, N. Katz, Y. Paltiel, and O. Millo, New J. Phys. 18, 113048 (2016). [7] D. Aasen, M. Hell, R. V. Mishmash, A. Higginbotham, J. Danon, M. Leijnse, T. S. Jespersen, J. A. Folk, C. M. Marcus, K. Flensberg, and J. Alicea, Phy. Rev. X 6, 031016 (2016). [8] C. W. J. Beenakker, Annu. Rev. Condens. Matter Phys. 4, 113 (2013). [9] M. Eschrig, Rep. Prog. Phys. 78, 104501 (2015).
Gianluigi Catelani	Mesoscopic superconductivity and quantum circuits
Proposers Gianluigi Catelani (Forschungszentrum Jülich), Martin Weides (University of Glasgow), Francesco Tafuri (Università di Napoli) Abstract The ongoing second quantum revolution has already led to significant advances in many areas, from atomic to solid-state physics, and in the fabrication and control of mesoscopic circuits based on electromagnetic, mechanical, ferromagnetic or optical systems, Josephson junctions, and hybrid devices. State-of-the-art quantum devices have enabled the realization of progressively more complex quantum circuits. These circuits have not only demonstrated the basic building blocks for quantum information processing (QIP) but have also led to beautiful quantum optics experiments in the microwave frequency domain and atomic physics experiments using superconducting qubits as artificial atoms. Moreover, in these mesoscopic devices, properties such as charge, spin, or heat transport are studied at the most fundamental level. Among the challenges relevant to QIP, three can be highlighted: one is to determine the best design for a qubit (in terms of coherence time, reproducibility, ease of control, etc.), the second one is to harness the properties of hybrid circuits by coupling strongly to e.g. mechanical or spin degrees of freedom, and the third one is to scale up the technology to circuits capable of testing, for example, quantum error correction algorithms or quantum simulations. The mini-colloquium will bring together theorists and experimentalists to discussed topics including (but not limited to) - coherence and dissipation in Josephson junctions and hybrid qubits and devices - quantum measurement in superconducting circuits - hybrid quantum circuits and quantum memories References
Surfaces and Interfaces
Gianlorenzo Bussetti	Microscopic investigation of the solid/liquid interface
Proposers Gianlorenzo Bussetti (Politecnico di Milano), Marek Nowicki (Uniwersytet Wrocławski) Abstract In one of his last public seminars, the Nobel laureate H. Rohrer highlighted the crucial importance of the solid/liquid interface investigation with these words: The central importance of understanding and controlling the solid-liquid interface on a nanoscopic scale, however, extends far beyond the classical topics of electrochemistry. Liquids provide new ways to treat and control surfaces (...) A new surface science will emerge that can deal with real surfaces at ambient conditions and in liquids, and which is based on the extremely high resolution of local-probe methods and their adaptability to different environments (...) Such a new type of surface science, however, requires substantial progress in many respects. [1] We believe that a periodic appointment to discuss technical improvements and progresses in our knowledge of the microscopic behavior of the solid/liquid interface is mandatory for our surface science community [2]. The proposed mini-colloquium tries to gather this community during the next EPS-CMD Conference. During the colloquium, we plan to call some speakers with experience in different topics: metal corrosion [3], physical/chemical properties of the metal-electrolyte interface [4], surface states at the solid/liquid interface [5], molecular assembling at the solid/liquid interface [6], TiO2/water interface [7], corrole and porphyrin compounds at the solid/liquid interface [8], graphite intercalation and the solid/electrolyte interface (SEI) problem. References 1) H. Rohrer, Solid-Liquid: The Interface of the Future (10.1007/978-94-015-8435-7_1) 2) K. Wandelt, Encyclopedia of Interfacial Chemistry (ISBN 978-0-12-809894-3) 3) C. Filoni et al., A combined EC-STM and EC-AFM investigation of the sulfate adsorption on a Cu(111) electrode surface up to the anodic corrosion potential (10.1016/j.apsusc.2022.155542) 4) M. Nowicki, K. Wandelt, Metal–Electrolyte Interfaces (10.1002/9783527680603.ch57) 5) S. Vazquez-Miranda et al., Chloride-Induced Surface States in Cu(110)/Liquid Interfaces (10.1021/acs.jpcc.0c08050) 6) G. Velpula et al., Concentration-in-Control” self-assembly concept at the liquid–solid interface challenged (10.1039/D1SC02950A) 7) G. Serrano et al., Molecular Ordering at the Interface Between Liquid Water and Rutile TiO2(110) (10.1002/admi.201500246) 8) B. Bonanni et al., Growth of Corrole Films from Solution: A Nanometer-Scale Study at the Real Solid–Liquid Interface (10.1021/acs.jpcc.1c00689) 9) G. Bussetti et al., Disclosing the Early Stages of Electrochemical Anion Intercalation in Graphite by a Combined Atomic Force Microscopy/Scanning Tunneling Microscopy Approach (10.1021/acs.jpcc.6b00407)
Carola Meyer	Molecularly functionalized low-dimensional systems
Proposers Carola Meyer (Department of Physics, Universität Osnabrück, Germany), Antonio Setaro (Physics Department, Freie Universität Berlin, Germany), Teresa Gatti (Department of Applied Science and Technology, Politecnico di Torino, Italy) Abstract This Focus Session aims at bringing together all the researchers active in the physics of low-dimensional systems that work at the edge between physics, chemistry, and material science. When scaling down materials to the nanometric world, they acquire novel amazing properties. Quantum effects stem out and promise to revolutionize several fields, such as optoelectronics, sensing, computing, bioimaging and diagnostics, and so on. Functionalization serves a double role: It safeguards the properties of low-dimensional systems from environmental effects while customizing them for targeted applications. A strong connection between experimental and theoretical physics ensures to comprehend and master the underlying physical mechanisms, while chemistry is required to synthesize and attach the functional groups to the systems, and engineering ability is required to embed them into devices. This mini-colloquium aspires at establishing a convergent platform between synthesis, microscopy, spectroscopy, electronics, and engineering of low-dimensional systems that are functionalized with molecules or nanoparticles to achieve novel magnetic, optical, and electronic properties and their possible implementation into devices in theory as well as in experiment. Possible topics would include (but not limited to): - 2-d materials - Semiconducting nanowires - Nano-carbon allotropes (graphene, nanoribbons, nanotubes, and so on) - Colloidal semiconducting nanocrystals - Nanoplasmonic hybridization - Molecular switching systems - Biosensing References
Mikołaj Lewandowski	Molecules at surfaces
Proposers Mikołaj Lewandowski (Adam Mickiewicz University in Poznań, Poland), Luca Vattuone (University of Genoa, Italy) Abstract The interaction of molecules with solid surfaces is an important scientific topic, as it constitutes the basis of many technologically-relevant processes, such as corrosion, catalytic synthesis, gas sensing and surface functionalization. In order to gain an in-depth understanding of the physical and chemical phenomena that govern these processes, it is necessary to perform experimental atomic-scale studies aimed at determining the molecule-solid interactions, as well as the interactions between different adsorbed molecules. Such studies have to be performed under well-defined laboratory conditions and are usually complemented by theoretical ab initio calculations. The Mini-colloquium will be devoted to recent advances in fundamental studies focused on the interaction of various molecules with solid surfaces, including both simple (CO, H2, etc.) and more complicate (e.g. porphyrins) chemical compounds on single-crystal supports. It will feature experimental and theoretical reports from scientists working in some of the most well-renowned research groups. Among other topics, the processes of physisorption and chemisorption, catalytic reactions at surfaces, on-surface synthesis, as well as molecular self-assembly, will be addressed. References D. Borodin et al., Science 377 (2022) 394 (DOI: 10.1126/science.abq1414) J.E. Barcelon et al., Applied Surface Science 609 (2023) 155307 (DOI: 10.1016/j.apsusc.2022.155307) T. Kosmala et al., Nature Catalysis 4 (2021) 850 (DOI: 10.1038/s41929-021-00682-2) L. A. Cipriano et al., ACS Catalysis 12 (2022) 11682 (DOI: 10.1021/acscatal.2c03020)
Wilhelm Auwärter	Molecular imaging and exploration of chemical reactions by scanning probe microscopy techniques
Proposers Wilhelm Auwärter (Technische Universität München), Gianlorenzo Bussetti (Politecnico di Milano) Abstract Since their invention, scanning probe microscopy (SPM) techniques, namely atomic force (AFM) and scanning tunneling microscopy (STM), have opened the route towards a local morphological and electronic investigation of nanoscale surface areas, clusters and single molecules. In particular, these potentialities have offered new perspectives in advanced characterization of chemical properties of molecular structures on surfaces. SPM can be considered a sort of a lab-on-a-tip not only for the different potential characterization but also for atomic-scale manipulation or chemical reactions (nano-chemistry) that can be induced. From this point of view, the tip-molecule-surface interfaces appear as an ultra-confined system where it is possible to test single-molecule devices. Considering the wide interest in such kind of research (academic and technological), this field has evolved in recent years, with technical improvements and novel findings. Consequently, we propose a mini-colloquium to give an update on some recent results and developments that can be of interest in the community of solid-state physics, focusing on ultrahigh vacuum environments. For the colloquium, we plan to include speakers with experience in different topics, including on-surface synthesis of novel molecules (refs. 1,2), confined structures (3), and polymers (3,4), atomic-scale manipulation and chemistry (5,6), and complex formation with ligation (7). References 1) Sweetman et al., Characterisation and Interpretation of On-Surface Chemical Reactions Studied by Ultra-High-Resolution Scanning Probe Microscopy (10.1002/9783527816699.ch2) 2) Xiang et al., Planar π-extended cycloparaphenylenes featuring an all-armchair edge topology (10.1038/s41557-022-00968-3) 3) Kinikar et al., On-surface polyarylene synthesis by cycloaromatization of isopropyl substituents (10.1038/s44160-022-00032-5) 4) Ivanovskaya et al., On-Surface Synthesis and Evolution of Self-Assembled Poly(p-phenylene) Chains on Ag(111): A Joint Experimental and Theoretical Study (10.1021/acs.jpcc.2c06926) 5) Q. Zhong et al., Constructing covalent organic nanoarchitectures molecule by molecule via scanning probe manipulation. (10.1038/s41557-021-00773-4) 6) Björk et al., The role of metal adatoms in a surface-assisted cyclodeydrogenation reaction on a gold surface, (10.1002/anie.202212354) 7) Knecht et al., N heterocyclic carbenes: molecular porters of surface mounted Ru porphyrins (10.1002/anie202211877)
Other topics
Giovanni Maria Vanacore	Quantum Control of Electrons for Advanced Microscopies and Spectroscopies, 2023 SMART-electron Event.
Proposers Giovanni Maria Vanacore (University of Milano-Bicocca), Andrea Konečná (CEITEC, Brno University of Technology) Abstract For a long time, progress in Electron Microscopy has been equated with the art of obtaining images and spectra of increasingly higher resolution: research was mainly aimed at obtaining a very small probes, aberration correction and fine energy selection. A swift change of paradigm has occurred during recent years, when the first ideas of electron-beam shaping were introduced. The main idea is to use properly designed elements to manipulate both phase and amplitude of the free-electron in a nearly arbitrary manner. A new way of conceiving electron microscopy is thus underway, with the potential to achieve enhanced performance and to measure new physical quantities. In particular, the ability to exploit the quantum nature of a free-electron can reveal novel information not accessible with conventional schemes. In this colloquium, we will present recent methods for coherent wave function engineering, particularly exploiting the quantum interaction between electrons and photons. We will discuss how quantum manipulation of electrons can be used to implement new imaging methods and spectroscopic tools with novel and enhanced capabilities. Also, we will explore correlated quantum state dynamics in condensed matter and nano-photonics. This colloquium, which is organized by the SMART-electron consortium (https://www.smartelectron.eu/), will be structured in four different sessions: 1. Quantum correlations in electron microscopy (chair: Ido Kaminer, TECHNION); 2. Electron beam shaping (chair: Vincenzo Grillo, CNR-Nano); 3. Recent progress in ultrafast electron microscopy and spectroscopy (chair: Fabrizio Carbone, EPFL); 4. Nanophotonics and ultrafast dynamics of materials (F. Javier García de Abajo, ICFO). References Please find here a few recent reviews on the topic of the colloquium: Madan, I.; Vanacore, G. M.; Gargiulo, S.; LaGrange, T.; Carbone, F. The quantum future of microscopy: Wave function engineering of electrons, ions, and nuclei. Appl. Phys. Lett. 2020, 116, 230502 Vanacore, G. M.; Madan, I.; Carbone, F. Spatio-temporal shaping of a free-electron wave function via coherent light–electron interaction. La Rivista del Nuovo Cimento 2020, 43, 567– 597, Roitman, D.; Shiloh, R.; Lu, P.-H.; Dunin-Borkowski, R. E.; Arie, A. Shaping of Electron Beams Using Sculpted Thin Films. ACS Photonics 2021, 8, 3394 Garcia de Abajo, F. J.; Di Giulio, V. Optical excitations with electron beams: Challenges and opportunities. ACS Photonics 2021, 8, 945– 974 C. Roques-Carmes, S. E Kooi, Y. Yang, N. Rivera, P. D Keathley, J. D Joannopoulos, S. G Johnson, I. Kaminer, K. K Berggren, M. Soljačić, Free-electron–light interactions in nanophotonics, Applied Physics Reviews 2023, 10, 011303
Giuseppe Maruccio	National and European infrastructures for Magnetism and Superconductivity - Status, Research and Opportunities
Proposers Giuseppe Maruccio (University of Salento), Paola Tiberto (INRIM), Alek Dediu (CNR-ISMN), Silvia Rizzato (University of Salento) Abstract One of the great challenges of society is innovation through the development of new and advanced materials. Such tailored materials are needed in all key-technological areas, from renewable energy concepts, through next-generation data storage, quantum computing, to biocompatible materials for medical applications and many of these future materials will be synthesized on a nano-scale. In order to reach these goals, advanced analytical tools are needed. High magnetic fields are among the most powerful tools available to scientists for the study, modification and control of states of matter, and in order to compete on the global scale, Europe set state-of-the-art high magnetic field facilities which provide the highest possible fields (both continuous and pulsed) for its many active and world-leading researchers. Within this minicolloquium the status, research and opportunities at National and European infrastructures for Magnetism and Superconductivity are discussed with the involvement of infrastructure directors, involved researchers and societies active in the field. References
Andrea Piovano	Neutrons scattering in condensed matter physics
Proposers Andrea Piovano (Institut Laue-Langevin), Marco Zanatta (University of Trento) Abstract Neutron scattering is a key technique for investigating the properties of materials on an atomic scale. The uniqueness of this method is based on the fact that the wavelength and energy of thermal neutrons ideally match interatomic distances and excitation energies in condensed matter, and thus neutron scattering is able to directly examine the static and dynamic properties of materials. In addition, neutrons carry a magnetic moment, which makes them a unique probe for detecting magnetic phenomena. The scope of this mini-colloquium is to present few showcases of success in the application of neutron techniques to the exploration of condensed matter physics, especially to researchers who might not be familiar with. Several aspect will be covered including, but not limited to, magnetic structures and excitations, lattice dynamics in disordered or partially ordered systems, coupling effects of technological relevance and collective quantum phenomena like superconductivity. References [1] Albert Furrer, Joël Mesot and Thierry Strässl, Neutron Scattering in Condensed Matter Physics, https://doi.org/10.1142/4870, [2] G. Venkat, C. D. W. Cox, D. Voneshen, A. J. Caruana, A. Piovano, M. D. Cropper and K. Morrison, Phys. Rev. Mater. 4 (7), 6 (2020) DOI10.1103/PhysRevMaterials.4.075402; [3] Garlatti E., Tesi L., Lunghi A., Atzori M., Voneshen DJ., Santini P., Sanvito G., Guidi T., Sessoli R., Carretta S. Nature Comm. 11(1), 1751 (2020) DOI10.1038/s41467-020-15475-7