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6 December 2016 Torque, spin and energy currents in chiral magnets (Conference Presentation)
Alexey Kovalev
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Proceedings Volume 9931, Spintronics IX; 99313Q (2016) https://doi.org/10.1117/12.2230977
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States
Abstract
We predict that a temperature gradient can induce a magnon-mediated intrinsic torque and a transverse spin current in ferromagnets with non-trivial magnon Berry curvature. With the help of a microscopic linear response theory of nonequilibrium magnon-mediated torques and spin currents we identify the interband and intraband components that manifest in ferromagnets with Dzyaloshinskii–Moriya interactions and magnetic textures. In addition to the torque and spin current, we also identify the mechanical torque effect in accordance with the conservation of angular momentum. To illustrate and assess the importance of such effects, we apply our theory to the magnon-mediated spin Nernst and torque responses in a kagome lattice ferromagnet.
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Alexey Kovalev "Torque, spin and energy currents in chiral magnets (Conference Presentation)", Proc. SPIE 9931, Spintronics IX, 99313Q (6 December 2016); https://doi.org/10.1117/12.2230977
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KEYWORDS
Magnetism
Magnons
Current controlled current source
Spintronics
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