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arXiv 1107.4202cond-mat.mes-hallcond-mat.supr-con
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自旋-轨道耦合引起的横向约瑟夫森效应:无时间反演对称性破缺的横向电流的产生

Transverse Josephson effect due to spin-orbit coupling: Generation of transverse current without time-reversal symmetry breaking

Takehito Yokoyama

摘要:

研究了超导体/正常金属/超导体结中的横向约瑟夫森电流,其中正常金属具有Rashba型自旋轨道耦合。结果表明,在正常金属中,横向电流是由自旋-轨道耦合引起的。这种效应是超导电流所特有的,在正常状态下,横向电流消失。此外,与正常状态下的霍尔效应相反,这种横向约瑟夫森效应是纯粹静态的,并且不需要施加磁场来实现这种效应。并与自旋霍尔效应作了比较,讨论了这种效应的物理解释。

英文摘要:

We investigate transverse Josephson current in superconductor/normal metal/superconductor junctions where the normal metal has Rashba type spin-orbit coupling. It is shown that trans- verse current arises from the spin-orbit coupling in the normal metal. This effect is specific to superconducting current and the transverse current vanishes in the normal state. In addition, this transverse Josephson effect is purely stationary and applied magnetic field is unnecessary to realize this effect, in contrast to the Hall effect in the normal state. We also discuss physical interpretation of this effect, comparing with the spin Hall effect.

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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