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arXiv cond-mat/9810344cond-mat.supr-con
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含磁性和非磁性杂质的各向异性超导体的临界温度

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

L. A. Openov

摘要:

本文在BCS模型下,从理论上研究了超导杂质和磁性杂质对超导转变温度的综合影响。对于超导序参量具有任意面内各向异性的二维超导体,从各向同性s波到d波(或任何角动量不为零的配对态),包括各向异性s波和混合(d+s)波,导出了临界温度随势散射率和自旋翻转散射率变化的表达式.这个表达式推广了不纯超导体临界温度的著名的Abrikosov-Gor'kov公式。讨论了缺陷和杂质在高温超导体中的作用。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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