Conductance Spectroscopy of Spin-Triplet Superconductors


Asano, Yasuhiro and Tanaka, Yukio and Golubov, Alexander A. and Kashiwaya, Satoshi (2007) Conductance Spectroscopy of Spin-Triplet Superconductors. Physical Review Letters, 99 (6). 067005. ISSN 0031-9007

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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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Copyright:© 2007 American Physical Society
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