中国物理B ›› 2025, Vol. 34 ›› Issue (6): 67501-067501.doi: 10.1088/1674-1056/adca1f

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Orbital magnetic field effect on spin waves in a triangular lattice tetrahedral antiferromagnetic insulator

Pi-Ye Zhou(周丕烨)1,2, Xiao-Hui Li(李晓慧)1,2, and Yuan Wan(万源)1,2,3,†   

  1. 1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 收稿日期:2025-03-19 修回日期:2025-04-03 接受日期:2025-04-08 出版日期:2025-05-16 发布日期:2025-06-11
  • 通讯作者: Yuan Wan E-mail:yuan.wan@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant No. 2022YFA1403800), the National Natural Science Foundation of China (Grant Nos. 12250008 and 12188101), and the Project for Young Scientists in Basic Research (Grant No. YSBR-059). This work was performed in part at the Aspen Center for Physics, supported by the National Natural Science Foundation of China (Grant No. PHY- 2210452).

Orbital magnetic field effect on spin waves in a triangular lattice tetrahedral antiferromagnetic insulator

Pi-Ye Zhou(周丕烨)1,2, Xiao-Hui Li(李晓慧)1,2, and Yuan Wan(万源)1,2,3,†   

  1. 1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • Received:2025-03-19 Revised:2025-04-03 Accepted:2025-04-08 Online:2025-05-16 Published:2025-06-11
  • Contact: Yuan Wan E-mail:yuan.wan@iphy.ac.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant No. 2022YFA1403800), the National Natural Science Foundation of China (Grant Nos. 12250008 and 12188101), and the Project for Young Scientists in Basic Research (Grant No. YSBR-059). This work was performed in part at the Aspen Center for Physics, supported by the National Natural Science Foundation of China (Grant No. PHY- 2210452).

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摘要： We theoretically study the effect of a uniform orbital magnetic field on spin waves in a triangular lattice tetrahedral antiferromagnetic insulator without spin-orbit coupling. Through symmetry analysis and microscopic calculation, we show that the optical spin wave mode at the Brillouin zone center can acquire a small orbital magnetic moment, although it exhibits no magnetic moment from the Zeeman coupling. Our results are potentially applicable to intercalated van der Waals materials and twisted double-bilayer graphene.

关键词: tetrahedral antiferromagnetic insulator, orbital magnetic field, spin waves

Abstract: We theoretically study the effect of a uniform orbital magnetic field on spin waves in a triangular lattice tetrahedral antiferromagnetic insulator without spin-orbit coupling. Through symmetry analysis and microscopic calculation, we show that the optical spin wave mode at the Brillouin zone center can acquire a small orbital magnetic moment, although it exhibits no magnetic moment from the Zeeman coupling. Our results are potentially applicable to intercalated van der Waals materials and twisted double-bilayer graphene.

Key words: tetrahedral antiferromagnetic insulator, orbital magnetic field, spin waves

中图分类号:  (Spin waves)

  • 75.30.Ds
75.30.-m (Intrinsic properties of magnetically ordered materials)