中国物理B ›› 2026, Vol. 35 ›› Issue (4): 47502-047502.doi: 10.1088/1674-1056/ae2771

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Engineering nonreciprocal damping and polarization of spin waves in ferromagnetic domain wall via Dzyaloshinskii-Moriya interaction and spin-transfer torque

Xiang Liu(刘想)1, Xiguang Wang(王希光)1,†, Zhixiong Li(李志雄)1, Xiufeng Han(韩秀峰)2, and Guanghua Guo(郭光华)1,‡   

  1. 1 School of Physics, Central South University, Changsha 410083, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2025-10-26 修回日期:2025-11-24 接受日期:2025-12-03 发布日期:2026-04-01
  • 通讯作者: Xiguang Wang, Guanghua Guo E-mail:wangxiguang@csu.edu.cn;guogh@mail.csu.edu.cn
  • 基金资助:
    This work is supported by the National Natural Science Foundation of China (Grant Nos. T2495212, 12274469, 12074437, and 12174452) and the Natural Science Foundation of Hunan Province of China (Grant Nos. 2025JJ20005 and 2023JJ40694).

Engineering nonreciprocal damping and polarization of spin waves in ferromagnetic domain wall via Dzyaloshinskii-Moriya interaction and spin-transfer torque

Xiang Liu(刘想)1, Xiguang Wang(王希光)1,†, Zhixiong Li(李志雄)1, Xiufeng Han(韩秀峰)2, and Guanghua Guo(郭光华)1,‡   

  1. 1 School of Physics, Central South University, Changsha 410083, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2025-10-26 Revised:2025-11-24 Accepted:2025-12-03 Published:2026-04-01
  • Contact: Xiguang Wang, Guanghua Guo E-mail:wangxiguang@csu.edu.cn;guogh@mail.csu.edu.cn
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (Grant Nos. T2495212, 12274469, 12074437, and 12174452) and the Natural Science Foundation of Hunan Province of China (Grant Nos. 2025JJ20005 and 2023JJ40694).

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摘要： anipulation of spin-wave polarization is fundamental for designing novel magnonic devices based on the polarization coding technique. Here, we demonstrate the generation of left-handed polarized spin waves (LPSWs) in a ferromagnetic domain wall and their polarization modulation through the combined effect of the Dzyaloshinskii-Moriya interaction (DMI) and spin-polarized electric current. A phase diagram delineating the stability regions of left- and right-handed polarized spin waves (RPSWs) is constructed as a function of DMI strength and current density. Our results reveal a pronounced DMI-induced nonreciprocal damping effect, predominantly manifested in RPSWs while leaving LPSWs largely unaffected. This phenomenon enables effective filtering of RPSWs in one direction, allowing the realization of pure LPSW propagation as well as elliptically polarized spin waves with tunable eccentricity. Our work provides a viable method for controlling spin-wave polarization and nonreciprocal propagation in ferromagnetic systems.

关键词: spin wave, Dzyaloshinskii-Moriya interaction, spin-polarized electric current, ferromagnetic domain wall

Abstract: anipulation of spin-wave polarization is fundamental for designing novel magnonic devices based on the polarization coding technique. Here, we demonstrate the generation of left-handed polarized spin waves (LPSWs) in a ferromagnetic domain wall and their polarization modulation through the combined effect of the Dzyaloshinskii-Moriya interaction (DMI) and spin-polarized electric current. A phase diagram delineating the stability regions of left- and right-handed polarized spin waves (RPSWs) is constructed as a function of DMI strength and current density. Our results reveal a pronounced DMI-induced nonreciprocal damping effect, predominantly manifested in RPSWs while leaving LPSWs largely unaffected. This phenomenon enables effective filtering of RPSWs in one direction, allowing the realization of pure LPSW propagation as well as elliptically polarized spin waves with tunable eccentricity. Our work provides a viable method for controlling spin-wave polarization and nonreciprocal propagation in ferromagnetic systems.

Key words: spin wave, Dzyaloshinskii-Moriya interaction, spin-polarized electric current, ferromagnetic domain wall

中图分类号:  (Domain walls and domain structure)

  • 75.60.Ch
85.75.-d (Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields) 75.40.Gb (Dynamic properties?)