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Impurity-induced T c reduction in high-temperature superconductors

Impurity-induced T c reduction in high-temperature superconductors We study the effects of nonmagnetic impurities substituted for Cu atoms on the superconducting transition temperature T c in high-temperature cuprate superconductors, using the d - p model within the fluctuation exchange approximation and the coherent potential approximation. T c near the optimum-doped region reduces more rapidly than that for the over-doped region. We show that the rapid reduction of T c is due mainly to the damping of the quasiparticle in our formalism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Impurity-induced T c reduction in high-temperature superconductors

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2004 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.70.174504
Publisher site
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Abstract

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

Journal

Physical Review B – American Physical Society (APS)

Published: Nov 1, 2004

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