Impurity-induced Tc reduction in high-temperature superconductors

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Physical Review B - Condensed Matter and Materials Physics

Volume

70

Issue

17

First Page

1

Last Page

5

Publication Date

11-1-2004

Abstract

We study the effects of nonmagnetic impurities substituted for Cu atoms on the superconducting transition temperature Tc in high-temperature cuprate superconductors, using the d-p model within the fluctuation exchange approximation and the coherent potential approximation. Tc near the optimum-doped region reduces more rapidly than that for the over-doped region. We show that the rapid reduction of Tc is due mainly to the damping of the quasiparticle in our formalism.

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Digitial Object Identifier (DOI)

10.1103/PhysRevB.70.174504

Disciplines

Physics

Keywords

Copper; Superconductors; High temperatures

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