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arXiv · 1204.4012

Anomalous Surface Impedance in a Normal-metal/Superconductor Junction with a Spin-active Interface

Yasuhiro Asano·Masahiro Ozaki·Tetsuro Habe·Alexander A. Golubov·Yukio Tanaka
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Abstract

We discuss the surface impedance (Z=R-iX) of a normal-metal/superconductor proximity structure taking into account the spin-dependent potential at the junction interface. Because of the spin mixing transport at the interface, odd-frequency spin-triplet s-wave Cooper pairs penetrate into the normal metal and cause the anomalous response to electromagnetic fields. At low temperature, the local impedance at a surface of the normal metal shows the nonmonotonic temperature dependence and the anomalous relation R>X. We also discuss a possibility of observing such anomalous impedance in experiments.

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Yasuhiro Asano, Masahiro Ozaki, Tetsuro Habe, Alexander A. Golubov, Yukio Tanaka. 2012-04-18. Anomalous Surface Impedance in a Normal-metal/Superconductor Junction with a Spin-active Interface. https://doi.org/10.1103/physrevb.86.024510

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