Year: 2001
Type: article
Abstract: We suggest a variant of the nonlinear $\ensuremath{\sigma}$ 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.
Authors: I. V. Yurkevich, Igor V. Lerner
Institution: University of Birmingham
Language: Latvian
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funder: Leverhulme Trust
OpenAlex ID: W2011578986