Proximity Action theory of superconductive nanostructures

M.A. Skvortsov^а, A.I. Larkin^а, б, M.V. Feigel’man^а
^аИнститут теоретической физики им. Л.Д. Ландау РАН, просп. Академика Семенова 1А, Черноголовка, Московская обл., 142432, Российская Федерация
^бWilliam I. Fine Theoretical Physics Institute, University of Minnesota, Minnesota, Minnesota, США

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.

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English fulltext is available at DOI: 10.1070/1063-7869/44/10S/S17

PACS: 74.20.−z, 74.70.−b, 74.80.-g, 03.65.Ud (все)
DOI: 10.1070/1063-7869/44/10S/S17
URL: https://ufn.ru/ru/articles/2001/13/q/
Цитата: Skvortsov M A, Larkin A I, Feigel’man M V "Proximity Action theory of superconductive nanostructures" УФН 171 76–80 (2001)

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English citation: Skvortsov M A, Larkin A I, Feigel’man M V “Proximity Action theory of superconductive nanostructures” Phys. Usp. 44 76–80 (2001); DOI: 10.1070/1063-7869/44/10S/S17

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