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Spin transfer torques generated by the anomalous Hall effect and anisotropic magnetoresistance



Tomohiro Taniguchi, Julie Grollier, Mark D. Stiles


Spin-orbit effects in ferromagnets, the anomalous Hall effect and the anisotropic magnetoresistance, generate spin currents in addition to the charge currents with which they are traditionally associated. These effects allow for the injection of a spin current into layers perpendicular to the electrical current flow. Unlike the related spin Hall effect in non-magnetic materials, they allow some control of the orientation of the injected spins. This control makes it possible to switch perpendicularly magnetized layers more easily because of the possibility of an out-of-plane component of the torque. It also makes it possible to switch in-plane magnetized layers via propagation of transverse/vortex walls and can efficiently induce dynamics in coupled magnetic systems, e.g. coupled transverse domain walls.
Physical Review Applied


Magnetization dynamics, spin Hall effect, anomalous Hall effect, anisotropic magnetoresistance, spin-orbit coupling, domain wall motion, drift-diffusion, Landau-Lifschitz-Gilbert equation, spin current


Taniguchi, T. , Grollier, J. and Stiles, M. (2015), Spin transfer torques generated by the anomalous Hall effect and anisotropic magnetoresistance, Physical Review Applied, [online],, (Accessed July 15, 2024)


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Created April 5, 2015, Updated October 12, 2021