First-principles study of the anisotropic magneto-Peltier effect

First-principles study of the anisotropic magneto-Peltier effect
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各向异性磁珀耳帖效应的第一性原理研究

DOI:
10.1103/physrevb.99.104406
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Y. Miura
Y. Miura
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
K. Masuda;K. Uchida;R. Iguchi;Y. Miura

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我们从理论上研究了各向异性磁珀耳帖效应,这是最近在实验上证明。一个基于第一性原理的玻尔兹曼输运方法,包括自旋轨道相互作用表明,Ni具有更大的各向异性的珀尔帖系数($\mathrm{\ensurmath {\Delta}}\mathrm{\ensurmath {\Pi}}$)比Fe,与实验一致。阐明了自旋-轨道相互作用引起的自旋翻转电子跃迁是大各向异性磁珀耳帖效应产生机制的关键。使用我们的方法,我们进一步预测几个铁磁金属更大的$\mathrm{\ensuremath{\Delta}}\mathrm{\ensuremath{\Pi}}$比Ni。
We study theoretically the anisotropic magneto-Peltier effect, which was recently demonstrated experimentally. A first-principles-based Boltzmann transport approach including the spin-orbit interaction shows that Ni has a larger anisotropy of the Peltier coefficient ($\mathrm{\ensuremath{\Delta}}\mathrm{\ensuremath{\Pi}}$) than Fe, consistent with experiments. It is clarified that spin-flip electron transitions due to the spin-orbit interaction are the key in the mechanism of the large anisotropic magneto-Peltier effect. Using our method, we further predict several ferromagnetic metals with much larger $\mathrm{\ensuremath{\Delta}}\mathrm{\ensuremath{\Pi}}$ than that of Ni.
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