Spin-orbit torque manipulated by fine-tuning of oxygen-induced orbital hybridization.

ABSTRACT: Current-induced spin-orbit torques provide an effective way to manipulate magnetization in spintronic devices, promising for fast switching applications in nonvolatile memory and logic units. Recent studies have revealed that the spin-orbit torque is strongly altered by the oxidation of heterostructures with broken inversion symmetry. Although this finding opens a new field of metal-oxide spin-orbitronics, the role of the oxidation in the spin-orbit physics is still unclear. Here, we demonstrate a marked enhancement of the spin-orbit torque induced by a fine-tuning of oxygen-induced modification of orbital hybridization. This is evidenced by a concomitant enhancement of the interface spin-orbit torque, interface spin loss, and interface perpendicular magnetic anisotropy within a narrow ran

SUBMITTER: Kageyama Y 

PROVIDER: S-EPMC6824862 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature