Current-driven spin orbit field in LaAlO3/SrTiO3 heterostructures

Published 2 Oct 2014 in cond-mat.mtrl-sci and cond-mat.mes-hall | (1410.0456v1)

Abstract: We demonstrate a current tunable Rashba spin orbit interaction in LaAlO3/SrTiO3 (LAO/STO) quasi two dimensional electron gas (2DEG) system. Anisotropic magnetoresistance (AMR) measurements are employed to detect and understand the current-induced Rashba field. The effective Rashba field scales with the current and a value of 2.35 T is observed for a dc-current of 200 uA. The results suggest that LAO/STO heterostructures can be considered for spin orbit torque based magnetization switching.

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