Interfacial spin Hall current in a Josephson junction with Rashba spin–orbit coupling

doi:10.1088/1674-1056/21/5/057402

Abstract We theoretically investigate the spin transport properties of the Cooper pairs in a conventional Josephson junction with Rashba spin--orbit coupling considered in one of the superconducting leads. It is found that an angle-resolved spin supercurrent flows through the junction and a nonzero interfacial spin Hall current driven by the superconducting phase difference also appears at the interface. The physical origin of this is that the Rashba spin--orbit coupling can induce a triplet order parameter in the s-wave superconductor. The interfacial spin Hall current dependences on the system parameters are also discussed.

Keywords: Josephson junction spin Hall current Rashba spin--orbit coupling interfacial current

Received: 09 October 2011
Revised: 27 April 2012
Accepted manuscript online:

PACS:	74.45.+c	(Proximity effects; Andreev reflection; SN and SNS junctions)
	71.70.Ej	(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
	72.25.-b	(Spin polarized transport)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 110704032 and 110704033), the Natural Science Foundation of JiangSu Province, China (Grant No. BK2010416), and the National Basic Research Program of China (Grant No. 2009CB945504).

Cite this article:

Yang Zhi-Hong(杨志红), Yang Yong-Hong(杨永宏), and Wang Jun(汪军) Interfacial spin Hall current in a Josephson junction with Rashba spin–orbit coupling 2012 Chin. Phys. B 21 057402

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Interfacial spin Hall current in a Josephson junction with Rashba spin–orbit coupling

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