Critical temperature of an anisotropic superconductor containing both nonmagnetic and magnetic impurities

被引：38
作者：
Openov, LA [1 ]
机构：
[1] Moscow State Tech Univ, Moscow State Engn Phys Inst, Moscow 115409, Russia
来源：
PHYSICAL REVIEW B | 1998年 / 58卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.58.9468
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The combined effect of both nonmagnetic and magnetic impurities on the superconducting transition temperature is studied theoretically within the BCS model. An expression for the critical temperature as a function of potential and spin-flip scattering rates is derived for a two-dimensional superconductor with arbitrary in-plane anisotropy of the superconducting order parameter, ranging from isotropic s wave to d wave (or any pairing state with nonzero angular momentum) and including anisotropic s wave and mixed (d+s) wave as particular cases. This expression generalizes the well-known Abrikosov-Gor'kov formula for the critical temperature of impure superconductors. The effect of defects and impurities in high-temperature superconductors is discussed. [S0163-1829(98)10037-1].
引用
收藏
页码：9468 / 9478
页数：11
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