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Updated: Apr 18, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Janus-enhanced magnetic modulation under strain engineering and carrier doping in Fe3GaTe2 monolayers
Chenhao Zhang1, Jiangpeng Zhou1, Zongnan Zhang1,2
1Department of Physics, Engineering Research Centre for Micro-Nano Optoelectronic Materials and Devices at Education Ministry, Fujian Provincial Key Laboratory of Semiconductor Materials and Applications, Xiamen University, Xiamen 361005, People's Republic of China. ypwu@xmu.edu.cn.
Janus functionalization of 2D Fe3GaTe2 ferromagnets enhances magnetic properties. Compressive strain and electron doping significantly boost Curie temperature (Tc) and exchange coupling for spintronic applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Two-dimensional (2D) intrinsic Fe3GaTe2 ferromagnets are of interest due to high Curie temperature (Tc) and perpendicular magnetic anisotropy.
- Janus functionalization offers a method to tune magnetic properties in 2D materials.
Purpose of the Study:
- Investigate the electronic and magnetic properties of monolayer Fe3GaTe2 and its Janus derivatives (Fe3GaXTe).
- Explore the effects of biaxial strain and electrostatic doping on these properties.
Main Methods:
- First-principles calculations were employed to systematically study the material properties.
- Analysis included atomic magnetic moments, magnetic anisotropy energy (MAE), Dzyaloshinskii-Moriya interaction (DMI), and exchange coupling.
Main Results:
- Janus functionalization significantly alters magnetic properties by changing geometry, charge distribution, and electronic states.
- Compressive strain and electron doping remarkably enhance exchange coupling and Curie temperature (Tc).
- Tunable MAE allows for controllable manipulation of the easy magnetization axis.
Conclusions:
- Janus engineering is effective for optimizing magnetic functionality in 2D ferromagnets.
- These findings provide a roadmap for developing advanced spintronic devices.
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