Spin transport in noncollinear antiferromagnetic metals

Spin transport in noncollinear antiferromagnetic metals
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非共线反铁磁金属中的自旋输运

DOI:
10.1103/physrevb.102.134403
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发表时间:
2020
期刊:
影响因子:
3.7
通讯作者:
Zhang, Shufeng
Zhang, Shufeng
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Cheng, Yihong;Zhang, Shufeng

文献摘要

参考文献

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对于非共线反铁磁金属,磁振子谱表现出非平凡的多带结构,其中磁振子角动量的方向和大小都与动量有关。我们通过考虑传导电子和磁振子之间的动量和角动量传递来研究这些磁振子对自旋输运性质的作用。利用耦合玻尔兹曼方程计算了电子自旋和磁振子的自旋电导率张量,证明了电场驱动的非极化电子电流可以有效地诱导磁振子自旋电流。计算了磁振子自旋电导率的温度依赖性。
For noncollinear antiferromagnetic metals, magnon spectra display nontrivial multiband structure in which both direction and magnitude of the angular momenta of magnons are momentum dependent. We study the roles of these magnons on the spin transport properties by taking into account the momentum and angular momentum transfer between conduction electrons and magnons. We have calculated spin conductivity tensor by using the coupled Boltzmann equations for the electron spin and magnon, and we show that the unpolarized electron current driven by an electric field can efficiently induce a magnon spin current. The temperature dependence of the magnon spin conductivity is also calculated.
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