2011

Spin Hall effect-driven spin torque in magnetic textures

Spin Hall effect-driven spin torque in magnetic textures
A. Manchon and K.-J. Lee
Appl. Phys. Lett. 99, 022504 (2011) ​​​​​
A. Manchon, K.-J. Lee
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2011
Current-induced spin torque and magnetization dynamics in the presence of spin Hall effect in magnetic textures is studied theoretically. The local deviation of the charge current gives rise to a current-induced spin torque of the form (1-β M)×[(u 0+ α H u 0× M)·∇] M, where u 0 is the direction of the injected current, αH is the Hall angle and β is the non-adiabaticity parameter due to spin relaxation. Since αH and β can have a comparable order of magnitude, we show that this torque can significantly modify the current-induced dynamics of both transverse and vortex walls.