中国物理B ›› 2019, Vol. 28 ›› Issue (7): 78503-078503.doi: 10.1088/1674-1056/28/7/078503

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Topological magnon insulator with Dzyaloshinskii-Moriya interaction under the irradiation of light

Liang Chen(陈亮)   

  1. School of Physics and Electronic Engineering, Taishan University, Taian 271000, China
  • 收稿日期:2019-01-02 修回日期:2019-04-29 出版日期:2019-07-05 发布日期:2019-07-05
  • 通讯作者: Liang Chen E-mail:zhuclweifang@sina.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 61604106) and Shandong Provincial Natural Science Foundation, China (Grant No. ZR2014FL025).

Topological magnon insulator with Dzyaloshinskii-Moriya interaction under the irradiation of light

Liang Chen(陈亮)   

  1. School of Physics and Electronic Engineering, Taishan University, Taian 271000, China
  • Received:2019-01-02 Revised:2019-04-29 Online:2019-07-05 Published:2019-07-05
  • Contact: Liang Chen E-mail:zhuclweifang@sina.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 61604106) and Shandong Provincial Natural Science Foundation, China (Grant No. ZR2014FL025).

摘要:

The topological magnon insulator on a honeycomb lattice with Dzyaloshinskii-Moriya interaction (DMI) is studied under the application of a circularly polarized light. At the high-frequency regime, the effective tight-binding model is obtained based on Brillouin-Wigner theory. Then, we study the corresponding Berry curvature and Chern number. In the Dirac model, the interplay between a light-induced handedness-dependent effective DMI and intrinsic DMI is discussed.

关键词: magnon, light, Brillouin-Wigner theory, Dzyaloshinskii-Moriya

Abstract:

The topological magnon insulator on a honeycomb lattice with Dzyaloshinskii-Moriya interaction (DMI) is studied under the application of a circularly polarized light. At the high-frequency regime, the effective tight-binding model is obtained based on Brillouin-Wigner theory. Then, we study the corresponding Berry curvature and Chern number. In the Dirac model, the interplay between a light-induced handedness-dependent effective DMI and intrinsic DMI is discussed.

Key words: magnon, light, Brillouin-Wigner theory, Dzyaloshinskii-Moriya

中图分类号:  (Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)

  • 85.75.-d
78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures) 75.30.-m (Intrinsic properties of magnetically ordered materials)