Naturally oxidized Cu generates damping-like orbital torques in Py/CuOx that rival Pt, and solid-state gating reversibly switches their sign.
Upon applying a negative VG, the Cu present in the stack gets oxidized and the resistance increases (light blue in Figure S8.1a)
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Tunable spin and orbital torques in Cu-based magnetic heterostructures
Naturally oxidized Cu generates damping-like orbital torques in Py/CuOx that rival Pt, and solid-state gating reversibly switches their sign.