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

作　　者：杨志红 杨永宏 汪军 

机构地区：[1]Department of Physics,Southeast University [2]College of Science,Nanjing University of Post and Telecommuntion

出　　处：《Chinese Physics B》2012年第5期621-626,共6页中国物理B（英文版）

基　　金：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);the National Basic Research Program of China(Grant No. 2009CB945504)

摘　　要：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.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.

关 键 词：Josephson junction spin Hall current Rashba spin-orbit coupling interfacial current 

分 类 号：O469[理学—凝聚态物理]