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Efficient Thermo-Spin Conversion in van der Waals Ferromagnet FeGaTe
Shuhan Liu1, Shaojie Hu1, Xiaomin Cui1
1Department of Physics, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan.
Advanced Materials (Deerfield Beach, Fla.)
|December 21, 2023
Summary
Researchers explored the FeGaTe 2D van der Waals ferromagnet for spintronic devices. This material shows efficient spin-charge and thermo-spin conversion at room temperature, enhancing thermoelectric applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Recent advances in 2D van der Waals magnetic materials are crucial for spintronic devices.
- Enhancing spin-conversion efficiency is key for developing spin-logic and spin-memory technologies.
Purpose of the Study:
- Investigate spin-conversion effects in the van der Waals ferromagnet FeGaTe.
- Assess the potential of FeGaTe for advanced spintronic and thermoelectric applications.
Main Methods:
- Systematic investigation of anomalous Hall effect (AHE) and anomalous Nernst effect (ANE).
- Characterization of FeGaTe, a 2D van der Waals ferromagnet with perpendicular magnetic anisotropy.
Main Results:
- AHE reveals efficient electric spin-charge conversion with a spin Hall angle exceeding 6%.
- ANE generates a significant transverse voltage at room temperature without an external magnetic field.
- Maximum transverse Seebeck coefficient of 440 nV/K and Nernst angle of approximately 62% were observed.
- Efficient thermo-spin conversion effect observed, with spin-up and spin-down electrons moving oppositely under a temperature gradient.
Conclusions:
- FeGaTe exhibits significant spin-conversion effects, demonstrating its potential for spintronics.
- The material shows promise for enhancing thermoelectric devices through efficient, magnetic-field-free thermo-spin conversion.
Keywords:
FeGaTeanomalous Hall effectanomalous Nernst effectspin conversionthermo‐spin polarizationvan der Waals ferromagnetMore Related Videos
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