Proximity Effect in Presence of Quantum Fluctuations

Details Proximity Effect in Presence of Quantum Fluctuations Proximity Effect in Presence of Quantum Fluctuations

1999-08-05

arxiv.org/abs/cond-mat/9908075v2

Physics

Condensed Matter

5 pages, special style file included. To be published in the Proceedings of the XXIVth Recontres de Moriond, "Quantum Physics

Scientific paper

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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