Impurity Bound States in Disordered d-Wave Superconductors

Rostam Moradian, Balazs L. Györffy, and James F. Annett
Phys. Rev. Lett. 89, 287002 – Published 27 December 2002

Abstract

Recent STM experiments on Bi2Sr2Ca2Cu3O10 observed sharp bound states associated with Zn and Ni impurities, as previously predicted theoretically. Here we extend the theory to the case of a finite concentration of impurities. Using the nonlocal coherent potential approximation, we show that the resonance peak both broadens and shifts as a function of impurity concentration.

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  • Received 14 March 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.287002

©2002 American Physical Society

Authors & Affiliations

Rostam Moradian1,*, Balazs L. Györffy2, and James F. Annett2

  • 1Physics Department, Razi University, Kermanshah, Iran
  • 2H. H. Wills Physics Laboratory, University of Bristol, Royal Fort, Tyndall Avenue, Bristol BS8 1TL, United Kingdom

  • *Electronic address: rostambristol@yahoo.com

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Vol. 89, Iss. 28 — 31 December 2002

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