Voltage Controlled Spin-Orbit Torque Switching in W/CoFeB/MgO
arXiv:2101.12281 · doi:10.1063/5.0037876
Abstract
Voltage control of magnetism and spintronics have been highly desirable, but rarely realized. In this work, we show voltage-controlled spin-orbit torque (SOT) switching in W/CoFeB/MgO films with perpendicular magnetic anisotropy (PMA) with voltage administered through SrTiO3 with a high dielectric constant. We show that a DC voltage can significantly lower PMA by 45%, reduce switching current by 23%, and increase the damping-like torque as revealed by the first and second-harmonic measurements. These are characteristics that are prerequisites for voltage-controlled and voltage-select SOT switching spintronic devices.
The following article has been accepted by Appl. Phys. Lett.. After it is published, it will be found at https://doi.org/10.1063/5.0037876
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