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Progress on the antiferromagnetic topological insulator MnBi2Te4
Shuai Li1,2,3,4,5, Tianyu Liu2,3,4,5, Chang Liu6,7
1Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
Magnetic topological materials like MnBi2Te4 offer insights into exotic quantum phenomena. This review surveys experimental and theoretical progress on MnBi2Te4, highlighting its unique magnetic and topological properties.
Area of Science:
- Condensed matter physics
- Materials science
- Quantum phenomena
Background:
- Topological materials possess robust surface/edge states, enabling exotic transport.
- Magnetic topological materials explore interplay between magnetic and topological orders.
- MnBi2Te4 is the first intrinsic antiferromagnetic topological insulator.
Purpose of the Study:
- To review experimental and theoretical progress on MnBi2Te4.
- To survey crystal and magnetic structures.
- To discuss band structure, surface states, and exotic phases.
Main Methods:
- Theoretical calculations and experimental probes.
- Analysis of bulk and thin film properties.
- Transport studies focusing on edge states.
Main Results:
- MnBi2Te4 exhibits unique magnetic and topological properties.
- Exotic quantum anomalous Hall and axion insulator phases are realizable.
- Edge state transport in MnBi2Te4 thin films is a key focus.
Conclusions:
- MnBi2Te4 is a crucial platform for studying magnetic topological materials.
- Further research can explore novel quantum phenomena.
- Thin film properties and edge transport are promising research avenues.
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