Rotational motion of magnons and the thermal Hall effect

Ryo Matsumoto; Shuichi Murakami

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Rotational motion of magnons and the thermal Hall effect

机译：磁振子的旋转运动和热霍尔效应

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Due to the Berry curvature in momentum space, the magnon wave packet undergoes two types of orbital motions in analogy with the electron system: the self-rotation motion and a motion along the boundary of the sample (edge current). The magnon edge current causes the thermal Hall effect, and these orbital motions give corrections to the thermal transport coefficients. We also apply our theory to the magnetostatic spin wave in a thin-film ferromagnet and derive expression for the Berry curvature.

机译：由于动量空间中的贝里曲率，类似于电子系统，磁振波包经历两种类型的轨道运动：自旋转运动和沿样品边界的运动（边缘电流）。磁振子边缘电流会引起热霍尔效应，这些轨道运动会修正热传递系数。我们还将我们的理论应用于薄膜铁磁体中的静磁自旋波，并得出贝里曲率的表达式。

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来源
《Physical review》 |2011年第18期|p.184406.1-184406.9|共9页
作者
Ryo Matsumoto; Shuichi Murakami;
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作者单位

Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan;

Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan;

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正文语种 eng
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关键词
magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields; intrinsic properties of magnetically ordered materials; magnetotransport phenomena; materials for magnetotransport;

机译：磁电子学自旋电子学：利用自旋极化传输或集成磁场的设备;磁性有序材料的固有特性;磁传输现象;磁运输材料;

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Rotational motion of magnons and the thermal Hall effect

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