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arXiv · 1003.2527

Strong surface contribution to the Nonlinear Meissner Effect

A. Zare·T. Dahm·N. Schopohl
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Abstract

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.

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A. Zare, T. Dahm, N. Schopohl. 2010-03-12. Strong surface contribution to the Nonlinear Meissner Effect. https://doi.org/10.1103/physrevlett.104.237001

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