Superconductivity in a disordered metal with Coulomb interactions
Superconductivity
2020-09-02 v2 Mesoscale and Nanoscale Physics
Strongly Correlated Electrons
Abstract
We study the electronic densities of states (DOS) of strongly disordered superconducting thin films of TiN. We find, using Scanning Tunneling Microscopy (STM) that the DOS decreases towards the Fermi level in the normal phase obtained by applying magnetic fields. The DOS shows spatial fluctuations whose length scale is related to the energy dependent DOS and is similar in normal and superconducting phases. This suggests that Coulomb interactions lead to a spatially varying DOS in the normal phase of a disordered superconductor.
Cite
@article{arxiv.2003.01763,
title = {Superconductivity in a disordered metal with Coulomb interactions},
author = {Svetlana V. Postolova and Alexey Yu. Mironov and Víctor Barrena and Jose Benito-Llorens and Jose Gabriel Rodrigo and Hermann Suderow and Mikhail R. Baklanov and Tatyana I. Baturina and Valerii M. Vinokur},
journal= {arXiv preprint arXiv:2003.01763},
year = {2020}
}