Linear response function around a localized impurity in a superconductor

Details Linear response function around a localized impurity in a superconductor Linear response function around a localized impurity in a superconductor

2002-11-26

arxiv.org/abs/cond-mat/0211577v1

J. Phys. Chem. Solids 64 (2003) 413

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1016/S0022-3697(02)00301-3

Imaging the effects of an impurity like Zn in high-Tc superconductors [Nature 61 (2000) 746] has rekindled interest in defect problems in the superconducting phase. This has prompted us here to re-examine the early work of March and Murray [Phys. Rev. 120 (1960) 830] on the linear response function in an initially translationally invariant Fermi gas. In particular, we present corresponding results for a superconductor at zero temperature, both in the s- and in the d-wave case, and mention their direct physical relevance in the case when the impurity potential is highly localized.

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