2024/03/24 by Qianbiao Liu, Long Liu, Liu, Qianbiao +5 · 1 citation
Computer Science · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Neural Networks and Applications #Neural Networks and Reservoir Computing
paper · pdf · doi:10.48550/arxiv.2403.16035
openalex publication_date 2024/03/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Electrical switching of magnetization is central to spintronics. Despite the enormous efforts on the spin torques and the Dzyaloshinskii-Moriya interaction (DMI) effects, some fundamental physics for electrical switching of magnetization is still missing as indicated by a number of remarkable long-standing puzzles. Here, we report the discovery of the long-range intralayer DMI effect widely existing in magnetic heterostructure, which is distinct from the yet-known DMI effects as it describes the chiral coupling of two orthogonal magnetic domains within the same magnetic layer via the mediation of an adjacent heavy metal layer. The long-range intralayer DMI generates a strong perpendicular effective magnetic field (HDMIz) on the perpendicular magnetization. Characteristically, HDMIz varies with the sign/magnitude of the interfacial DMI constant, the applied in-plane magnetic fields, and the distribution of the perpendicular magnetic anisotropy. The long-range intralayer DMI results in striking consequences including the strongly asymmetric current/field switching of perpendicular magnetization, hysteresis loop shift of perpendicular magnetization in the absence of in-plane direct current, and sharp, complete switching of perpendicular magnetization purely by an in-plane magnetic field. Utilizing the long-range intralayer DMI effect, we demonstrate programable, complete Boolean logic operations (i.e., AND, NAND, NOT, OR, and NOR) within a single spin-orbit torque device. These results will stimulate the investigation of the long-range intralayer DMI effect and its impacts on a variety of spintronic devices.