Proximity Effect in Presence of Quantum Fluctuations

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

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Proximity Effect in Presence of Quantum Fluctuations

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

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Abstract

The effect of Coulomb interaction upon superconductive proximity effect in disordered metals is studied, employing newly developed Keldysh functional approach (cond-mat/9907358). We have calculated subgap Andreev conductance between superconductor and 2D dirty film, as well as Josephson coupling via such a film. Both two qualitatively different Coulomb effects - suppression of the tunneling density of states and disorder-enchanced repulsion in the Cooper channel - are shown to be important at sufficiently low temperatures.

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M. V. Feigel'man, A. I. Larkin, M. A. Skvortsov. 1999-08-05. Proximity Effect in Presence of Quantum Fluctuations. https://arxiv.org/abs/cond-mat/9908075

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