Josephson spin current in triplet superconductor junctions

Josephson spin current in triplet superconductor junctions
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DOI:
10.1103/physrevb.74.220501
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发表时间:
2006-10
期刊:
影响因子:
3.7
通讯作者:
Y. Asano
Y. Asano
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Y. Asano

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本文从理论上讨论了自旋三重态超导/绝缘体/自旋三重态超导结中的自旋电流。在低温下,中能隙安德烈夫谐振态不仅会异常增强充电电流,还会异常增强自旋电流。库珀对和电磁场之间的耦合导致磁场中的直流自旋流和施加偏置电压下的交变自旋流中的弗朗霍夫图案。
This paper theoretically discusses the spin current in spin-triplet superconductor / insulator / spin-triplet superconductor junctions. At low temperatures, a midgap Andreev resonant state anomalously enhances not only the charge current but also the spin current. The coupling between the Cooper pairs and the electromagnetic fields leads to the Frounhofer pattern in the direct current spin flow in magnetic fields and the alternative spin current under applied bias-voltages.