Field-Free, Deterministic Giant Spin-Orbit Torque Switching of 1.3 T Perpendicular Magnetization With Symmetry-Lifted Topological Surface States.

ABSTRACT: The field-free control of perpendicular magnetization using spin-orbit torque (SOT) is a key challenge in spintronics, simplifying design and integration for both memory and logic applications. Unlike conventional heavy metal/ferromagnet heterostructures that already break out-of-plane symmetry, thus can readily offer in-plane switching, realizing deterministic out-of-plane switching requires breaking additional in-plane symmetries. In this study, we demonstrate field-free switching in a heterostructure composed of a self-intercalated 2D magnet, Cr₃Te₄, and a topological insulator, (Bi_0.75Sb_0.25)₂Te₃. In this system, the surface states of the topological insulator ensure efficient charge-to-spin conversion, but not determini

SUBMITTER: Ren H 

PROVIDER: S-EPMC12910540 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature