Field-free deterministic switching of all–van der Waals spin-orbit torque system above room temperature

Kajale, Shivam N.; Nguyen, Thanh; Hung, Nguyen Tuan; Li, Mingda; Sarkar, Deblina

doi:10.1126/sciadv.adk8669

Field-free deterministic switching of all–van der Waals spin-orbit torque system above room temperature

Journal Article · Fri Mar 15 00:00:00 EDT 2024 · Science Advances

DOI:https://doi.org/10.1126/sciadv.adk8669· OSTI ID:2471947

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Massachusetts Institute of Technology (MIT), Cambridge, MA (United States); OSTI
Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)
Massachusetts Institute of Technology (MIT), Cambridge, MA (United States); Tohoku University, Sendai (Japan)

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.

View Accepted Manuscript (DOE)

Research Organization:: Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0020148

OSTI ID:: 2471947

Journal Information:: Science Advances, Journal Name: Science Advances Journal Issue: 11 Vol. 10; ISSN 2375-2548

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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