Thermoelectric spin transfer in textured magnets

Abstract

We study charge and energy transport in a quasi-1D magnetic wire in the presence of magnetic textures. The energy flows can be expressed in a fashion similar to charge currents, leading to new energy-current induced spin torques. In analogy to charge currents, we can identify two reciprocal effects: spin-transfer torque on the magnetic order parameter induced by energy current and the Berry-phase gauge field induced energy flow. In addition, we phenomenologically introduce new $\beta -$like viscous coupling between magnetic dynamics and energy current into the LLG equation, which originates from spin mistracking of the magnetic order. We conclude that the new viscous term should be important for the thermally induced domain wall motion. We study the interplay between charge and energy currents and find that many of the effects of texture motion on the charge currents can be replicated with respect to energy currents. For example, the moving texture can lead to energy flows which is an analogue of the electromotive force in case of charge currents. We suggest a realization of cooling effect by magnetic texture dynamics.

5 pages, 1 figure

References in corpus (14)

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• Spin pumping by a field-driven domain wall
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Cited by in corpus (24)

• Spin Caloritronics
• Theory of the Spin Seebeck Effect
• Landau-Lifshitz theory of the longitudinal spin Seebeck effect
• Thermal generation, manipulation and detection of skyrmions
• Evidence for thermal spin transfer torque
• Magnetic texture-induced thermal Hall effects
• Thermomagnonic spin transfer and Peltier effects in insulating magnets
• Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets
• Nanoscale Magnetic Heat Pumps and Engines
• Skyrmionic spin Seebeck effect via dissipative thermomagnonic torques
• Theory of spin Peltier effect
• Self-consistent calculation of spin transport and magnetization dynamics
• Theory of spin transport induced by the temperature gradient
• Magnetocaloritronic nanomachines
• Nano scale thermo-electrical detection of magnetic domain wall propagation
• Domain wall magneto-Seebeck effect
• Thermopower and Thermally Induced Domain Wall Motion in (Ga,Mn)As
• Fundamental Theory of Current-Induced Motion of Magnetic Skyrmions
• Thermally induced spin-transfer torques in superconductor/ferromagnet bilayers
• Microscopic calculation of thermally-induced spin-transfer torques
• Spin-Transfer Torque in Altermagnets with Magnetic Textures
• Spin Transfer from the point of view of the ferromagnetic degrees of freedom
• Magnetization pumping and dynamics in a Dzyaloshinskii-Moriya magnet
• Theory of magnon motive force in chiral ferromagnets