Theory of disordered unconventional superconductors


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Keles A. , Andreev A. V. , Spivak B. Z. , Kivelson S. A.

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, vol.119, no.6, pp.1109-1114, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 119 Issue: 6
  • Publication Date: 2014
  • Doi Number: 10.1134/s1063776114120127
  • Title of Journal : JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
  • Page Numbers: pp.1109-1114

Abstract

In contrast to conventional s-wave superconductivity, unconventional (e.g., p- or d-wave) superconductivity is strongly suppressed even by relatively weak disorder. Upon approaching the superconductormetal transition, the order parameter amplitude becomes increasingly inhomogeneous, leading to effective granularity and a phase ordering transition described by the Mattis model of spin glasses. One consequence of this is that at sufficiently low temperatures, between the clean unconventional superconducting and the diffusive metallic phases, there is necessarily an intermediate superconducting phase that exhibits s-wave symmetry on macroscopic scales.