Pair breaking and bound states in disordered superconductors


We study the effects of inhomogeneous pairing interactions and impurities in short-coherence-length superconductors. Within the Born approximation, the effects of pairing disorder and magnetic impurities are identical. The T-matrices for pairing disorder sites with and without an impurity give rise to bound states within the BCS (Bardeen-Cooper-Schrieffer) gap, consistent with scanning tunnelling microscopy results on Bi2Sr2CaCu2O8+δ with Zn or Ni impurities.

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Divisions: College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
Uncontrolled Keywords: approximation theory,bismuth compounds,additives doping,Eigenvalues and eigenfunctions,fermi level,hamiltonians,impurities,mathematical models,matrix algebra,parameter estimation,scanning tunneling microscopy,stoichiometry,vectors,magnetic impurities,oxide superconductors
Publication ISSN: 1361-648X
Last Modified: 04 Jan 2024 08:18
Date Deposited: 16 Dec 2014 12:20
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Related URLs: http://www.scop ... a06d31821b291c8 (Scopus URL)
PURE Output Type: Article
Published Date: 2002-08-12
Published Online Date: 2002-07-24
Authors: Chattopadhyay, A.K. (ORCID Profile 0000-0001-5499-6008)
Klemm, R.A.
Sa, D.



Version: Published Version

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