Anomalous spin-orbit torques in magnetic single-layer films.

ABSTRACT: The spin Hall effect couples charge and spin transport^1-3, enabling electrical control of magnetization^4,5. A quintessential example of spin-Hall-related transport is the anomalous Hall effect (AHE)⁶, first observed in 1880, in which an electric current perpendicular to the magnetization in a magnetic film generates charge accumulation on the surfaces. Here, we report the observation of a counterpart of the AHE that we term the anomalous spin-orbit torque (ASOT), wherein an electric current parallel to the magnetization generates opposite spin-orbit torques on the surfaces of the magnetic film. We interpret the ASOT as being due to a spin-Hall-like current generated with an efficiency of 0.053 ± 0.003 in Ni₈₀Fe₂₀, comparable to the spi

SUBMITTER: Wang W 

PROVIDER: S-EPMC11566720 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature