Related Experiment Video
Updated: Sep 24, 2025
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.2K
Strain-tunable magnetic anisotropy in two-dimensional Dirac half-metals: nickel trihalides
Zheng Li1, Baozeng Zhou1, Chongbiao Luan2
1Tianjin Key Laboratory of Film Electronic & Communicate Devices, School of Electrical and Electronic Engineering, Tianjin University of Technology Tianjin 300384 China baozeng@tju.edu.cn.
RSC Advances
|May 9, 2022
Summary
We discovered intrinsic two-dimensional (2D) NiX3 materials exhibiting Dirac half-metal properties. These materials offer 100% spin polarization and massless Dirac fermions, ideal for spintronics applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Mechanics
Background:
- Intrinsic two-dimensional (2D) ferromagnetism is a recent discovery with significant spintronics potential.
- Magnetic anisotropy energy is crucial for magnetization stability in nanoscale applications.
Purpose of the Study:
- To predict and characterize novel 2D materials with potential for spintronics.
- To investigate the electronic and magnetic properties of 2D NiX3 (X = Cl, Br, I) as intrinsic Dirac half-metals.
Main Methods:
- First-principles calculations were employed to investigate the electronic and magnetic properties.
- Energetics, atomic structures, and electronic band structures were analyzed.
- The influence of biaxial strain on magnetic anisotropy energy was studied.
Main Results:
- 2D NiX3 materials were predicted to be intrinsic Dirac half-metals with 100% spin polarization.
- These materials exhibit massless Dirac fermions, high Curie temperatures, and large magnetic anisotropy energy.
- Magnetic anisotropy energy shows dependence on biaxial strain, with Ni-d orbital hybridization being a key factor.
Conclusions:
- Monolayer NiX3 presents a promising class of materials for efficient spin injection and high spin mobility.
- The predicted properties of 2D NiX3 broaden the applicability of 2D magnetism in advanced spintronic devices.
- These materials are dynamically and thermodynamically stable, suggesting practical viability.
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