2021/01/28 by Jinsong Xu, C. L. Chien · 21 citations
Engineering · Materials Science · Physics and Astronomy · #Condensed matter physics #Electrical engineering #Engineering #Ferroelectric and Negative Capacitance Devices #Ferromagnetism #Magnetic properties of thin films #Materials science #Optoelectronics #Physics #Spin (aerodynamics) #Spintronics #Torque #Voltage #ZnO doping and properties #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/5.0037876
published in Applied Physics Letters 118(5) (American Institute of Physics) · 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
arxiv created 2021/01/28 · openalex publication_date 2021/02/01 · arxiv updated 2021/02/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
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.