標題: Spin-Hall current and spin polarization in an electrically biased SNS Josephson junction
作者: Mal'shukov, A. G.
Chu, C. S.
電子物理學系
Department of Electrophysics
公開日期: 10-八月-2011
摘要: Periodic in time spin-Hall current and spin polarization induced by a dc electric bias have been calculated in a superconductor-normal two-dimensional electron gas-superconductor (SNS) Josephson junction. We assumed that the band energies of electrons in the normal system are split due to Rashba spin-orbit coupling. The transport parameters have been calculated within the diffusion approximation and by using perturbation expansion over a small SN contact transparency. We found out that, in contrast to the stationary Josephson effect, the spin-Hall current does not turn to zero. Besides a direct proximity effect caused by a Cooper pair's transition into a triplet state, the spin current and polarization are also driven by a periodic electric field associated with the charge imbalance.
URI: http://dx.doi.org/10.1103/PhysRevB.84.054520
http://hdl.handle.net/11536/20407
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.84.054520
期刊: PHYSICAL REVIEW B
Volume: 84
Issue: 5
結束頁: 
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