Keldysh proximity action for disordered superconductors

Pramana

A I Larkin¹  M A Skvortsov¹  M V Feigel'man1¹ 

[1] L. D. Landau Institute for Theoretical Physics, Moscow 119334, Russia$$

关键词: Superconductivity;    nanostructures;    noise.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We review a novel approach to the superconductive proximity effect in disordered normal–superconducting (N–S) structures. The method is based on the multicharge Keldysh action and is suitable for the treatment of interaction and fluctuation effects. As an application of the formalism, we study the subgap conductance and noise in two-dimensional N–S systems in the presence of the electron–electron interaction in the Cooper channel. It is shown that singular nature of the interaction correction at large scales leads to a nonmonotonuos temperature, voltage and magnetic field dependence of the Andreev conductance.

【 授权许可】

Unknown