Keldysh proximity action for disordered superconductors

M. V. Feigel'man, A. I. Larkin, M. A. Skvortsov

Research output: Contribution to journalArticlepeer-review


We review a novel approach to the superconductive proximity effect in disordered normal-superconducting (N-S) structures. The method is based on the multi-charge 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.

Original languageEnglish
Pages (from-to)1039-1049
Number of pages11
JournalPramana - Journal of Physics
Issue number6 SPEC. ISS.
Publication statusPublished - Jun 2005
Externally publishedYes


  • Nanostructures
  • Noise
  • Superconductivity


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