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Title: Theory of disordered unconventional superconductors

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.
Authors:
; ;  [1] ;  [2]
  1. University of Washington, Department of Physics (United States)
  2. Stanford University, Department of Physics (United States)
Publication Date:
OSTI Identifier:
22472474
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 119; Journal Issue: 6; Other Information: Copyright (c) 2014 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; D WAVES; ORDER PARAMETERS; P WAVES; PHASE TRANSFORMATIONS; S WAVES; SPIN GLASS STATE; SUPERCONDUCTIVITY; SUPERCONDUCTORS; SYMMETRY; TEMPERATURE DEPENDENCE