Triplet Josephson current modulated by Rashba spin-orbit coupling

被引：6

作者：

Yang, Zhuohui ^{[1
]}

Wang, Jun ^{[1
]}

Chan, K. S. ^{[2
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 210096, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2010年 / 22卷 / 04期

关键词：

SUPERCONDUCTORS; FERROMAGNET; JUNCTIONS; TRANSPORT;

D O I：

10.1088/0953-8984/22/4/045302

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study the Rashba spin-orbit coupling (RSOC) effect on the supercurrent in a clean triplet superconductor/two-dimensional electron gas/triplet superconductor (TS/2DEG/TS) junction, where RSOC is considered in the 2DEG region. Based on the Bogoliubov-de Gennes equation and quantum scattering method, we show that RSOC can lead to a 0-pi oscillation of supercurrent and the abrupt current reversal effect. The current direction can be reversed by a tiny modulation of RSOC, and this is attributed to the equal spin pairing of the TS order parameter and the spin precession phase of the quasiparticle traveling in the RSOC region. The RSOC strength can be controlled by an electric field in experiments, thus our findings provide a purely electric means to modulate the supercurrent in TS Josephson junctions.

引用

页数：7

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