Calculation of current-induced torque from spin continuity equation

Abstract

Current-induced torque is formulated based on the spin continuity equation. The formulation does not rely on the assumption of separation of local spin and charge degrees of freedom, in contrast to approaches based on the $s$-$d$ model or mean-field approximation of itinerant ferromagnetism. This new method would be thus useful for the estimation of torques in actual materials by first-principles calculations. As an example, the formalism is applied to the adiabatic limit of the $s$-$d$ model in order to obtain the analytical expression for torques and corresponding $\beta$ terms arising from spin relaxation due to spin-flip scattering and spin-orbit interaction.

submitted to Phys. Rev. B

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Cited by in corpus (19)

• Microscopic approach to current-driven domain wall dynamics
• Non-adiabatic spin torque investigated using thermally activated magnetic domain wall dynamics
• Effective gauge field theory of spintronics
• Non-Adiabatic Spin Transfer Torque in Real Materials
• Thermal vector potential theory of transport induced by temperature gradient
• Spin Dynamics with Inertia in Metallic Ferromagnets
• Spin motive force induced by Rashba interaction in the strong sd coupling regime
• Consistent microscopic analysis of spin pumping effects
• Spin correlation function theory of spin-charge conversion effects
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• Alternating Current-induced Interfacial Spin-transfer Torque
• Hydrodynamic theory of vorticity-induced spin transport
• Spin-current absorption by inhomogeneous spin-orbit coupling