Nonlinear σ model for disordered superconductors

Yurkevich, I.V. and Lerner, Igor V. (2001). Nonlinear σ model for disordered superconductors. Physical Review B, 63 (6),


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: Engineering & Applied Sciences > Mathematics
Engineering & Applied Sciences > Systems analytics research institute (SARI)
Additional Information: ©2001 American Physical Society
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)
Published Date: 2001-01-24
Authors: Yurkevich, I.V. ( 0000-0003-1447-8913)
Lerner, Igor V.



Version: Published Version

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