Spin Currents Induced by Nonuniform Rashba-Type Spin–Orbit Field

Spin Currents Induced by Nonuniform Rashba-Type Spin–Orbit Field
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非均匀 Rashba 型自旋轨道场引起的自旋电流

DOI:
10.1143/jpsj.80.084701
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发表时间:
2011
影响因子:
1.7
通讯作者:
S. Murakami
S. Murakami
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
K. Tsutsui;A. Takeuchi;G. Tatara;S. Murakami

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相似文献

在Keldysh Green函数形式下,研究了非均匀自旋轨道耦合的非磁性或铁磁性金属的自旋弛豫力矩。在非磁体中,当自旋-轨道耦合不均匀时,会产生松弛力矩。在没有外场的情况下,松弛力矩诱导的自旋电流与rashba型自旋轨道场(RSOF)的矢量手性成正比。另一方面,在外场存在的情况下,自旋松弛力矩是由外场和矢量手性的耦合引起的。我们的研究结果表明,通过在结中设计RSOF可以控制自旋汇或源效应。
We study the spin relaxation torque in nonmagnetic or ferromagnetic metals with nonuniform spin–orbit coupling within the Keldysh Green's function formalism. In non-magnet, the relaxation torque is shown to arise when the spin–orbit coupling is not uniform. In the absence of an external field, the spin current induced by the relaxation torque is proportional to the vector chirality of Rashba-type spin–orbit field (RSOF). In the presence of an external field, on the other hand, spin relaxation torque arises from the coupling of the external field and vector chirality of RSOF. Our result indicates that spin-sink or source effects are controlled by designing RSOF in junctions.
动态自旋泵浦系统中的扩散自旋流与局部自旋流
DOI: --
发表时间: 2010
期刊: Physical Review B VOL.81
影响因子: --
作者:
Akihito Takeuchi;Kazuhiro Hosono;Gen Tatara
通讯作者: Gen Tatara
DOI: 10.1126/science.1087128
发表时间: 2003-09-05
期刊: SCIENCE
影响因子: 56.9
作者:
Murakami, S;Nagaosa, N;Zhang, SC
通讯作者: Zhang, SC
DOI: 10.1038/nature07321
发表时间: 2008-10-09
期刊: NATURE
影响因子: 64.8
作者:
Uchida, K.;Takahashi, S.;Saitoh, E.
通讯作者: Saitoh, E.
DOI: 10.1103/physrevlett.98.156601
发表时间: 2007-04-13
影响因子: 8.6
作者:
Kimura, T.;Otani, Y.;Maekawa, S.
通讯作者: Maekawa, S.