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arXiv 0705.2929cond-mat.supr-concond-mat.mes-hall
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铁磁三层膜的长程三重态约瑟夫森效应

Long range triplet Josephson effect through a ferromagnetic trilayer

M. Houzet, A. I. Buzdin

摘要:

我们研究了通过铁磁三层的约瑟夫森电流,在扩散和清洁的限制。对于层中的共线(平行或反平行)磁化,由于超导体/铁磁体结构中的短程邻近效应,约瑟夫森电流很小。对于非共线磁化,我们确定的条件约瑟夫森电流占主导地位的另一个贡献来自长距离三重态邻近效应。

英文摘要:

We study the Josephson current through a ferromagnetic trilayer, both in the diffusive and clean limits. For colinear (parallel or antiparallel) magnetizations in the layers, the Josephson current is small due to short range proximity effect in superconductor/ferromagnet structures. For non colinear magnetizations, we determine the conditions for the Josephson current to be dominated by another contribution originating from long range triplet proximity effect.

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