Role of anisotropic impurity scattering in anisotropic superconductors
Condensed Matter
2009-10-28 v1
Abstract
A theory of nonmagnetic impurities in an anisotropic superconductor including the effect of anisotropic (momentum-dependent) impurity scattering is given. It is shown that for a strongly anisotropic scattering the reduction of the pair-breaking effect of the impurities is large. For a significant overlap between the anisotropy functions of the scattering potential and that of the pair potential and for a large amount of anisotropic scattering rate in impurity potential the superconductivity becomes robust vis a vis impurity concentration. The implications of our result for YBCO high-temperature superconductor are discussed.
Keywords
Cite
@article{arxiv.cond-mat/9609217,
title = {Role of anisotropic impurity scattering in anisotropic superconductors},
author = {Grzegorz Haran and A. D. S. Nagi},
journal= {arXiv preprint arXiv:cond-mat/9609217},
year = {2009}
}
Comments
14 pages, RevTeX, 5 PostScript figures, to be published in Phys. Rev. B (December 1, 1996)