Suppression of superconductivity in disordered interacting wires

D. A. Pesin, A. V. Andreev

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14 Citations (Scopus)

Abstract

We study superconductivity suppression due to thermal fluctuations in disordered wires using the replica nonlinear σ-model (NLσM). We show that in addition to the thermal phase slips there is another type of fluctuations that result in a finite resistivity. These fluctuations are described by saddle points in NLσM and cannot be treated within the Ginzburg-Landau approach. The contribution of such fluctuations to the wire resistivity is evaluated with exponential accuracy. The magnetoresistance associated with this contribution is negative.

Original languageEnglish
Article number117001
JournalPhysical Review Letters
Volume97
Issue number11
DOIs
Publication statusPublished - 2006
Externally publishedYes

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