中国物理B ›› 2025, Vol. 34 ›› Issue (3): 37501-037501.doi: 10.1088/1674-1056/ada551

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Electronic structure and coexisting topological states in ferromagnetic and antiferromagnetic phases of MnBi2Te4 quantum wires

Jian Li(李健)1,2,3,†, Zhu-Cai Yin(尹柱财)1,2, Qing-Xu Li(李清旭)1,2, and Jia-Ji Zhu(朱家骥)1,2,3,‡   

  1. 1 School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    2 Institute for Advanced Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    3 Southwest Center for Theoretical Physics, Chongqing University, Chongqing 401331, China
  • 收稿日期:2024-12-05 修回日期:2025-01-03 接受日期:2025-01-03 发布日期:2025-03-15
  • 通讯作者: Jian Li, Jia-Ji Zhu E-mail:jianli@cqupt.edu.cn;zhujj@cqupt.edu.cn
  • 基金资助:
    Project sponsored by the Natural Science Foundation of Chongqing, China (Grant No. CSTB2024NSCQMSX0736), the Special Project of Chongqing Technology Innovation and Application Development (Major Project) (Grant No. CSTB2024TIAD-STX0035), and the Research Foundation of Institute for Advanced Sciences of CQUPT (Grant No. E011A2022328).

Electronic structure and coexisting topological states in ferromagnetic and antiferromagnetic phases of MnBi2Te4 quantum wires

Jian Li(李健)1,2,3,†, Zhu-Cai Yin(尹柱财)1,2, Qing-Xu Li(李清旭)1,2, and Jia-Ji Zhu(朱家骥)1,2,3,‡   

  1. 1 School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    2 Institute for Advanced Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    3 Southwest Center for Theoretical Physics, Chongqing University, Chongqing 401331, China
  • Received:2024-12-05 Revised:2025-01-03 Accepted:2025-01-03 Published:2025-03-15
  • Contact: Jian Li, Jia-Ji Zhu E-mail:jianli@cqupt.edu.cn;zhujj@cqupt.edu.cn
  • Supported by:
    Project sponsored by the Natural Science Foundation of Chongqing, China (Grant No. CSTB2024NSCQMSX0736), the Special Project of Chongqing Technology Innovation and Application Development (Major Project) (Grant No. CSTB2024TIAD-STX0035), and the Research Foundation of Institute for Advanced Sciences of CQUPT (Grant No. E011A2022328).

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摘要： We theoretically investigate the electronic structure of cylindrical magnetic topological insulator quantum wires in $\mathrm{MnBi_{2}Te_{4}}$. Our study reveals the emergence of topological surface states in the ferromagnetic phase, characterized by spin-polarized subbands resulting from intrinsic magnetization. In the antiferromagnetic phase, we identify the coexistence of three distinct types of topological states, encompassing both surface states and central states.

关键词: quantum wires, $\mathrm{MnBi_{2}Te_{4}}$, magnetic topological insulator, electronic structure

Abstract: We theoretically investigate the electronic structure of cylindrical magnetic topological insulator quantum wires in $\mathrm{MnBi_{2}Te_{4}}$. Our study reveals the emergence of topological surface states in the ferromagnetic phase, characterized by spin-polarized subbands resulting from intrinsic magnetization. In the antiferromagnetic phase, we identify the coexistence of three distinct types of topological states, encompassing both surface states and central states.

Key words: quantum wires, $\mathrm{MnBi_{2}Te_{4}}$, magnetic topological insulator, electronic structure

中图分类号:  (Magnetic properties of monolayers and thin films)

  • 75.70.Ak
73.22.-f (Electronic structure of nanoscale materials and related systems) 68.65.Fg (Quantum wells) 68.60.-p (Physical properties of thin films, nonelectronic)