Thermal spin-transfer torques on magnetic domain walls |
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| Authors: | Zhe Yuan Shuai Wang Ke Xia |
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| Affiliation: | 1. State Environmental Protection Key Laboratory of Satellite Remote Sensing, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China;2. Zhejiang Normal University, Jinhua 321004, China;3. Hefei University of Technology, Hefei 230009, China;4. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;1. Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, P.O. Box 9825, Beijing 100029, China;2. Geoluminescence Dating Research Laboratory, Department of Geology, Baylor University, One Bear Place 97354, Waco, TX 76798, USA;3. School of Environment and Planning, Liaocheng University, Liaocheng 252000, China |
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| Abstract: | ![]()
We studied the spin-transfer torques acting on magnetic domain walls in the presence of a nonequilibrium thermal distribution using a generalized Landauer–Büttiker formalism, where the energy flow is described on the same footing as the electric current. First-principles transport calculations have been performed in Ni and Co domain walls as typical examples. The temperature difference between two sides of the domain wall can induce remarkable spin- transfer torques, which are comparable with the current-induced torques required for the domain wall motion. |
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