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arXiv 1003.2527cond-mat.supr-con
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非线性迈斯纳效应的强表面贡献

Strong surface contribution to the Nonlinear Meissner Effect

A. Zare, T. Dahm, N. Schopohl

摘要:

我们证明了在d波超导体的体非线性迈斯纳效应是由表面效应由于Andreev束缚态在低温下占主导地位。这种表面效应对非线性响应系数的贡献遵循1/T^3定律,与体1/T行为相比,其符号相反。在T/T_c ~ 1/sqrt(kappa)的温度下,发生了从体相主导行为向表面主导行为的转变。我们提出了一个近似的分析计算,这支持我们的数值计算,并提供了一个定性的理解的效果。这种效应可以通过互调失真实验来探讨。

英文摘要:

We demonstrate that in a d-wave superconductor the bulk nonlinear Meissner effect is dominated by a surface effect due to Andreev bound states at low temperatures. The contribution of this surface effect to the nonlinear response coefficient follows a 1/T^3 law with opposite sign compared to the bulk 1/T behavior. The cross-over from bulk dominated behavior to surface dominated behavior occurs at a temperature of T/T_c ~ 1/sqrt(kappa). We present an approximate analytical calculation, which supports our numerical calculations and provides a qualitative understanding of the effect. The effect can be probed by intermodulation distortion experiments.

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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