标题: | Spin-Hall current and spin polarization in an electrically biased SNS Josephson junction |
作者: | Mal'shukov, A. G. Chu, C. S. 电子物理学系 Department of Electrophysics |
公开日期: | 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 |
起始页: | 0 |
结束页: | 0 |
显示于类别: | Articles |
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