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arXiv · 0705.0829

Conductance Spectroscopy of Spin-triplet Superconductors

Yasuhiro Asano·Yukio Tanaka·Alexander A. Golubov·Satoshi Kashiwaya
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Abstract

We propose a novel experiment to identify the symmetry of superconductivity on the basis of theoretical results for differential conductance of a normal metal connected to a superconductor. The proximity effect from the superconductor modifies the conductance of the remote current depending remarkably on the pairing symmetry: spin-singlet or spin-triplet. The clear-cut difference in the conductance is explained by symmetry of Cooper pairs in a normal metal with respect to frequency. In the spin-triplet case, the anomalous transport is realized due to an odd-frequency symmetry of Cooper pairs.

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Yasuhiro Asano, Yukio Tanaka, Alexander A. Golubov, Satoshi Kashiwaya. 2007-05-07. Conductance Spectroscopy of Spin-triplet Superconductors. https://doi.org/10.1103/physrevlett.99.067005

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