Nonlinear σ model for disordered superconductors


We suggest a variant of the nonlinear σ model for the description of disordered superconductors. The main distinction from existing models lies in the fact that the saddle point equation is solved nonperturbatively in the superconducting pairing field. It allows one to use the model both in the vicinity of the metal-superconductor transition and well below its critical temperature with full account for the self-consistency conditions. We show that the model reproduces a set of known results in different limiting cases, and apply it for a self-consistent description of the proximity effect at the superconductor-metal interface.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
Additional Information: ©2001 American Physical Society
Publication ISSN: 1550-235X
Last Modified: 19 Apr 2024 07:09
Date Deposited: 24 Dec 2014 11:45
Full Text Link: https://arxiv.o ... mat/0006378.pdf
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://journals ... sRevB.63.064522 (Publisher URL)
PURE Output Type: Article
Published Date: 2001-01-24
Authors: Yurkevich, I.V. (ORCID Profile 0000-0003-1447-8913)
Lerner, Igor V.



Version: Published Version

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