Tailoring spin-orbit torque in diluted magnetic semiconductors

Li, Hang; Wang, Xuhui; Dogˇan, Fatih; Manchon, Aurelien
May 2013
Applied Physics Letters;5/13/2013, Vol. 102 Issue 19, p192411
Academic Journal
We study the spin orbit torque arising from an intrinsic linear Dresselhaus spin-orbit coupling in a single layer III-V diluted magnetic semiconductor. We investigate the transport properties and spin torque using the linear response theory, and we report here: (1) a strong correlation exists between the angular dependence of the torque and the anisotropy of the Fermi surface; (2) the spin orbit torque depends nonlinearly on the exchange coupling. Our findings suggest the possibility to tailor the spin orbit torque magnitude and angular dependence by structural design.


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