A new technical paper titled “Field-free deterministic switching of all–van der Waals spin-orbit torque system above room temperature” was published by researchers at MIT, with funding by the NSF and U.S. Department of Energy.
Abstract
“Two-dimensional van der Waals (vdW) magnetic materials hold promise for the development of high-density, energy-efficient spintronic devices for memory and computation. Recent breakthroughs in material discoveries and spin-orbit torque control of vdW ferromagnets have opened a path for integration of vdW magnets in commercial spintronic devices. However, a solution for field-free electric control of perpendicular magnetic anisotropy (PMA) vdW magnets at room temperatures, essential for building compact and thermally stable spintronic devices, is still missing. Here, we report a solution for the field-free, deterministic, and nonvolatile switching of a PMA vdW ferromagnet, Fe3GaTe2, above room temperature (up to 320 K). We use the unconventional out-of-plane anti-damping torque from an adjacent WTe2 layer to enable such switching with a low current density of 2.23 × 106 A cm−2. This study exemplifies the efficacy of low-symmetry vdW materials for spin-orbit torque control of vdW ferromagnets and provides an all-vdW solution for the next generation of scalable and energy-efficient spintronic devices.”
Find the technical paper here and the related MIT news release here. Published March 2024.
Shivam N. Kajale et al. ,Field-free deterministic switching of all–van der Waals spin-orbit torque system above room temperature.Sci. Adv.10,eadk8669(2024).DOI:10.1126/sciadv.adk8669.
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