Proximity Effect in Presence of Quantum Fluctuations
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.
- Publication:
-
arXiv e-prints
- Pub Date:
- August 1999
- DOI:
- 10.48550/arXiv.cond-mat/9908075
- arXiv:
- arXiv:cond-mat/9908075
- Bibcode:
- 1999cond.mat..8075F
- Keywords:
-
- Condensed Matter
- E-Print:
- 5 pages, special style file included. To be published in the Proceedings of the XXIVth Recontres de Moriond, "Quantum Physics at Mesoscopic Scale", Les Arc, Jan.23-30, 1999. (An errow in the reference number in the asbtract is corrected)