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29 March 2024
 
  » arxiv » 1304.0113

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Violation of Anderson's theorem for s-wave superconductor containing impurities with retarded interaction
K.V. Grigorishin ; B.I. Lev ;
Date 30 Mar 2013
AbstractA generalization of a disordered metal’s theory has been proposed when scattering of quasi-particles by impurities is caused with a retarded interaction. It was shown that in this case Anderson’s theorem was violated in the sense that introduction of the impurities in s-wave superconductor increases critical temperature. The increasing depends on parameters of metal, impurities and their concentration. At a specific relation between the parameters the critical temperature of the dirty superconductor can essentially exceed critical temperature of pure one. Thus the impurities catalyzes superconductivity in an originally low-temperature superconductor.
Source arXiv, 1304.0113
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