FisMat2017 - Submission - View

Abstract's title: Inhomogeneity in low-dimensional superconductors
Submitting author: Lara Benfatto
Affiliation: ISC-CNR
Affiliation Address: Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome
Country: Italy
Oral presentation/Poster (Author's request): Oral presentation
Other authors and affiliations:
Abstract

In the last few years an increasing experimental evidence has been accumulating that in low-dimensional superconductors the superconducting ground state develops an emergent inhomogeneity. This behaviour can be triggered by strong disorder, as it has been seen in  conventional superconductors like NbN, InOx and TiN, but it can be also induced by quantum confinement at the nanoscale, as it happens in arrays made of Al nanograins or in the 2D electron gas at the interface of insulating LAO/STO oxides. In all these cases the granular superconducting landscape offers the unique possibility to observe collective excitations of the superconducting phase that would be otherwise spectroscopically inherent in homogeneous systems. Here I will review our theoretical progresses in the description of inhomogeneous superconductors, in connection with experimental findings.