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arXiv 1504.05052cond-mat.supr-concond-mat.mes-hall
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双量子点耦合的常规超导体和非中心对称超导体的约瑟夫森响应

Josephson response of a conventional and a noncentrosymmetric superconductor coupled via a double quantum dot

Björn Sothmann, Rakesh P. Tiwari

摘要:

我们考虑了通过约瑟夫森结的输运,该结由一个常规的s波超导体通过一个双量子点耦合到一个非中心对称的超导体,具有两个,单重态和三重态配对。我们计算了Andreev束缚态能量和相应的Josephson电流。我们证明了电流-相位关系是非中心对称超导体中单重态-三重态比的灵敏探针。特别地,在存在不均匀磁场的情况下,系统表现出$φ$结行为。

英文摘要:

We consider transport through a Josephson junction consisting of a conventional s-wave superconductor coupled via a double quantum dot to a noncentrosymmetric superconductor with both, singlet and triplet pairing. We calculate the Andreev bound state energies and the associated Josephson current. We demonstrate that the current-phase relation is a sensitive probe of the singlet-triplet ratio in the noncentrosymmetric superconductor. In particular, in the presence of an inhomogeneous magnetic field the system exhibits a $φ$-junction behavior.

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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