中国物理B ›› 2026, Vol. 35 ›› Issue (7): 77508-077508.doi: 10.1088/1674-1056/ae118e

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Dynamic modes of kπ skyrmions excited by spin waves

Ruiyu Huang(黄瑞玉), Chunjun Qi(祁纯军), Zhe Yi(易哲), Wei Liu(刘巍), Lin Chen(陈琳), and Zhikuo Tao(陶志阔)†   

  1. College of Electronic and Optical Engineering & College of Flexible Electronics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • 收稿日期:2025-07-26 修回日期:2025-09-28 接受日期:2025-10-10 发布日期:2026-07-10
  • 通讯作者: Zhikuo Tao E-mail:zktao@njupt.edu.cn

Dynamic modes of kπ skyrmions excited by spin waves

Ruiyu Huang(黄瑞玉), Chunjun Qi(祁纯军), Zhe Yi(易哲), Wei Liu(刘巍), Lin Chen(陈琳), and Zhikuo Tao(陶志阔)†   

  1. College of Electronic and Optical Engineering & College of Flexible Electronics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2025-07-26 Revised:2025-09-28 Accepted:2025-10-10 Published:2026-07-10
  • Contact: Zhikuo Tao E-mail:zktao@njupt.edu.cn

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摘要： The dynamic modes of the $k\pi$ skyrmions excited by spin waves are investigated. Firstly, formations of $k\pi$ skyrmions are investigated. Secondly, breathing modes of $k\pi$ skyrmions excited by spin waves are studied, and it is found that spin waves can effectively excite breathing modes. The breathing frequencies excited by spin waves are identical to the intrinsic frequencies for 1$\pi $ skyrmions, while the breathing frequencies excited by spin waves are larger than the intrinsic frequencies for 2$\pi $ skyrmions and 3$\pi $ skyrmions. Thirdly, gyration modes of $k\pi$ skyrmions excited by spin waves are studied, and it is found that spin waves can effectively excite gyration modes. In particular, the ranges of the trajectories driven by spin waves with intrinsic gyration frequencies are larger than the ranges of the trajectories driven by spin waves with other frequencies. This work promotes the understanding of $k\pi$ skyrmion dynamics under spin-wave excitation and provides a platform for developing spin-wave-based microwave devices utilizing $k\pi$ skyrmions.

关键词: kπ skyrmions, spin waves, dynamic properties

Abstract: The dynamic modes of the $k\pi$ skyrmions excited by spin waves are investigated. Firstly, formations of $k\pi$ skyrmions are investigated. Secondly, breathing modes of $k\pi$ skyrmions excited by spin waves are studied, and it is found that spin waves can effectively excite breathing modes. The breathing frequencies excited by spin waves are identical to the intrinsic frequencies for 1$\pi $ skyrmions, while the breathing frequencies excited by spin waves are larger than the intrinsic frequencies for 2$\pi $ skyrmions and 3$\pi $ skyrmions. Thirdly, gyration modes of $k\pi$ skyrmions excited by spin waves are studied, and it is found that spin waves can effectively excite gyration modes. In particular, the ranges of the trajectories driven by spin waves with intrinsic gyration frequencies are larger than the ranges of the trajectories driven by spin waves with other frequencies. This work promotes the understanding of $k\pi$ skyrmion dynamics under spin-wave excitation and provides a platform for developing spin-wave-based microwave devices utilizing $k\pi$ skyrmions.

Key words: kπ skyrmions, spin waves, dynamic properties

中图分类号:  (Spin waves)

  • 75.30.Ds
75.80.+q (Magnetomechanical effects, magnetostriction) 85.70.Ay (Magnetic device characterization, design, and modeling) 12.39.Dc (Skyrmions)