Universal broadening of the Bardeen-Cooper-Schrieffer coherence peak of disordered superconducting films

• Published in: Physical review letters Vol. 109; no. 14; p. 147002
• Main Authors: Feigel'man, M V, Skvortsov, M A
• Format: Journal Article
• Language: English
• Published: United States 05.10.2012

In disordered superconductors, the local pairing field fluctuates in space, leading to the smearing of the BCS peak in the density of states and the appearance of the subgap tail states. We analyze the universal mesoscopic contributions to these effects and show that they are enhanced by the Coulomb...