Related Experiment Video
Updated: Jan 13, 2026
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Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
Published on: October 5, 2013
15.0K
Topological Phase Transition in Two-Dimensional Magnetic Material CrI3 Bilayer Intercalated with Mo
Chen-En Yin1, Angus Huang1, Horng-Tay Jeng1,2,3,4
1Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan.
Materials (Basel, Switzerland)
|October 29, 2025
Summary
Molybdenum-intercalated chromium triiodide bilayers show ferromagnetic semiconductor properties. This discovery paves the way for tunable spintronic devices by enabling manipulation of the quantum anomalous Hall effect.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Phenomena
Background:
- Exploration of novel two-dimensional (2D) materials is driven by graphene's discoveries.
- Investigating alternative 2D materials for unique physical phenomena is crucial.
Purpose of the Study:
- To theoretically investigate Mo-intercalated CrI3 bilayer.
- To reveal its potential for quantum anomalous Hall effect (QAHE) and spintronic applications.
Main Methods:
- First-principles calculations were employed for theoretical investigation.
- Analysis of electronic band structure and magnetic properties.
Main Results:
- Mo-intercalated CrI3 bilayer exhibits ferromagnetic semiconductor behavior.
- A small magnetocrystalline anisotropy energy (MAE) of 0.618 meV/Cr(Mo) was found.
- Spin-orbit coupling (SOC) induces band gaps, enabling QAHE with a nonzero Chern number.
Conclusions:
- The system demonstrates tunable topology and QAHE originating from the quantum spin Hall effect (QSHE).
- The small MAE allows for experimental manipulation of magnetization via external magnetic fields.
- Mo-intercalated CrI3 is a promising material for advanced spintronic applications.
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