中国物理B ›› 2024, Vol. 33 ›› Issue (6): 67502-067502.doi: 10.1088/1674-1056/ad2a6b

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Consistency between domain wall oscillation modes and spin wave modes in nanostrips

Xinwei Dong(董新伟)† and Zhenjiang Wu(吴振江)   

  1. Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China
  • 收稿日期:2023-11-17 修回日期:2024-01-29 接受日期:2024-02-19 出版日期:2024-06-18 发布日期:2024-06-18
  • 通讯作者: Xinwei Dong E-mail:dongxw@xmu.edu.cn
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities (Grant No. 20720210030) and the National Natural Science Foundation of China (Grant No. 11204255).

Consistency between domain wall oscillation modes and spin wave modes in nanostrips

Xinwei Dong(董新伟)† and Zhenjiang Wu(吴振江)   

  1. Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China
  • Received:2023-11-17 Revised:2024-01-29 Accepted:2024-02-19 Online:2024-06-18 Published:2024-06-18
  • Contact: Xinwei Dong E-mail:dongxw@xmu.edu.cn
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities (Grant No. 20720210030) and the National Natural Science Foundation of China (Grant No. 11204255).

摘要: Investigations on domain wall (DW) and spin wave (SW) modes in a series of nanostrips with different widths and thicknesses have been carried out using micromagnetic simulation. The simulation results show that the frequencies of SW modes and the corresponding DW modes are consistent with each other if they have the same node number along the width direction. This consistency is more pronounced in wide and thin nanostrips, favoring the DW motion driven by SWs. Further analysis of the moving behavior of a DW driven by SWs is also carried out. The average DW speed can reach a larger value of $\sim 140 $m/s under two different SW sources. We argue that this study is very meaningful for the potential application of DW motion driven by SWs.

关键词: micromagnetic simulation, domain wall, spin wave

Abstract: Investigations on domain wall (DW) and spin wave (SW) modes in a series of nanostrips with different widths and thicknesses have been carried out using micromagnetic simulation. The simulation results show that the frequencies of SW modes and the corresponding DW modes are consistent with each other if they have the same node number along the width direction. This consistency is more pronounced in wide and thin nanostrips, favoring the DW motion driven by SWs. Further analysis of the moving behavior of a DW driven by SWs is also carried out. The average DW speed can reach a larger value of $\sim 140 $m/s under two different SW sources. We argue that this study is very meaningful for the potential application of DW motion driven by SWs.

Key words: micromagnetic simulation, domain wall, spin wave

中图分类号:  (Magnetization dynamics)

  • 75.78.-n
75.60.Ch (Domain walls and domain structure) 75.78.Cd (Micromagnetic simulations ?)