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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Room-Temperature van der Waals Ferromagnet Switching by Spin-Orbit Torques
Weihao Li1,2, Wenkai Zhu1,2, Gaojie Zhang3,4
1State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.
Advanced Materials (Deerfield Beach, Fla.)
|October 27, 2023
Summary
Room-temperature electrical switching of van der Waals (vdW) ferromagnets was achieved using spin-orbit torques (SOTs). This breakthrough in vdW ferromagnet Fe3GaTe2 paves the way for advanced spintronic devices.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Spintronics
Background:
- Van der Waals (vdW) magnets offer potential for next-generation spintronic devices due to their unique properties.
- A key challenge is the low Curie temperature of vdW ferromagnets, hindering room-temperature electrical manipulation.
- Previous research has not realized electrical control of magnetization in vdW ferromagnets at room temperature.
Purpose of the Study:
- To demonstrate the room-temperature electrical switching of perpendicular magnetization in a vdW ferromagnet.
- To investigate the effectiveness of spin-orbit torques (SOTs) for manipulating vdW ferromagnet magnetization.
- To explore the potential of Fe3GaTe2/Pt bilayers for spintronic applications.
Main Methods:
- Utilized spin-orbit torques (SOTs) to switch the perpendicular magnetization of Fe3GaTe2.
- Employed Fe3GaTe2/Pt bilayers for the experiments.
- Quantitatively determined SOT efficiency using harmonic measurements.
Main Results:
- Successfully switched the perpendicular magnetization of Fe3GaTe2 at room temperature using SOTs.
- Achieved magnetization switching with a low current density of 1.3 × 10^7 A cm^-2.
- Determined a high SOT efficiency (ξDL ≈ 0.28), exceeding that of conventional ferromagnet devices.
Conclusions:
- Room-temperature electrical switching of vdW ferromagnet Fe3GaTe2 by SOTs is feasible.
- The high SOT efficiency in Fe3GaTe2/Pt bilayers is promising for spintronic applications.
- This work provides a foundation for developing vdW ferromagnet-based spintronic devices.
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