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arXiv 1001.4576cond-mat.mtrl-sci
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铁磁半导体中自旋守恒散射对Gilbert阻尼的影响

Effect of spin-conserving scattering on Gilbert damping in ferromagnetic semiconductors

K. Shen, G. Tatara, M. W. Wu

摘要:

基于$s$ - $d$模型对铁磁半导体中的Gilbert阻尼进行了理论研究。与金属中的情况相反,由于自旋轨道耦合的动量相关的有效磁场,铁磁半导体中的所有自旋守恒散射提供了额外的自旋弛豫通道,从而修改Gilbert阻尼。在纯自旋流的存在下,我们预测了一个新的贡献,由于各向异性的自旋轨道耦合和纯自旋流的相互作用。

英文摘要:

The Gilbert damping in ferromagnetic semiconductors is theoretically investigated based on the $s$-$d$ model. In contrast to the situation in metals, all the spin-conserving scattering in ferromagnetic semiconductors supplies an additional spin relaxation channel due to the momentum dependent effective magnetic field of the spin-orbit coupling, thereby modifies the Gilbert damping. In the presence of a pure spin current, we predict a new contribution due to the interplay of the anisotropic spin-orbit coupling and a pure spin current.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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