Enhancing z Spin Generation in Trivial Spin Hall Materials for Scalable, Energy-Efficient, Field-Free, Complete Spin-Orbit Torque Switching Applications.

ABSTRACT: Despite the remarkable efforts in the past two decades, it has remained a major challenge to achieve switching of perpendicularly magnetized spin-orbit torque devices in a scalable, energy-efficient, field-free, integration-friendly, and complete manner. Here, a giant enhancement of z spin generation in low-resistivity spin Hall metal/FeCoB devices is reported by alloying the spin Hall metal Pt with Ti and by electric asymmetry engineering. The damping-like spin torques of z spins and y spins are enhanced by 6 and 3 times relative to those of conventional Pt/FeCoB and enable complete, record-low-power, deterministic switching of FeCoB devices with strong perpendicular magnetic anisotropy and high coercivity. The Pt₇₅Ti₂₅/FeCoB heterostructure also exhibits relatively

SUBMITTER: Liu Q 

PROVIDER: S-EPMC12533401 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature