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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Spin Direction-Controlled Electronic Band Structure in Two-Dimensional Ferromagnetic CrI3
Peiheng Jiang1, Lei Li1, Zhaoliang Liao2
1Key Laboratory of Magnetic Materials and Devices & Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , China.
Nano Letters
|May 23, 2018
Summary
Researchers discovered a giant magneto band-structure (GMB) effect in chromium triiodide (CrI3). Changing magnetization direction alters the electronic band structure, enabling magnetic field-controlled properties for spintronics.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Spintronics devices leverage electron spin for novel functionalities.
- Two-dimensional van der Waals materials offer unique physical properties.
Purpose of the Study:
- To theoretically demonstrate a giant magneto band-structure (GMB) effect in CrI3.
- To explore the impact of magnetization direction on electronic and topological properties.
Main Methods:
- Density Functional Theory (DFT) calculations.
- Model analysis of electronic band structure.
- Investigation of Fermi surface and topological states.
Main Results:
- A direct-to-indirect bandgap transition induced by spin reorientation.
- Magnetic field-controlled photoluminescence.
- Giant anisotropic magnetoresistance due to Fermi surface changes.
- Modification of topological states with magnetization direction.
Conclusions:
- The GMB effect in CrI3 offers a new pathway for spintronics applications.
- Spin manipulation in CrI3 provides control over electronic and optical properties.
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