Interaction region of magnon-mediated spin torques and novel magnetic states

doi:10.1088/1674-1056/ac04a8

中国物理B ›› 2021, Vol. 30 ›› Issue (10): 107506-107506.doi: 10.1088/1674-1056/ac04a8

Interaction region of magnon-mediated spin torques and novel magnetic states

Zai-Dong Li(李再东)^1,2,3,†, Qi-Qi Guo(郭奇奇)¹, Yong Guo(郭永)⁴, Peng-Bin He(贺鹏斌)⁵, and Wu-Ming Liu(刘伍明)⁶

1 Department of Applied Physics, Hebei University of Technology, Tianjin 300401, China;
2 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China;
3 School of Science, Tianjin University of Technology, Tianjin 300384, China;
4 Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China;
5 School of Physics and Electronics, Hunan University, Changsha 410082, China;
6 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

收稿日期:2021-04-15 修回日期:2021-04-15 接受日期:2021-05-25 发布日期:2021-09-30
通讯作者: Zai-Dong Li E-mail:lizd@email.tjut.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61774001), the Natural Science Foundation of Hebei Province of China (Grant No. F2019202141), and the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, China (Grant No. KF201906).

Interaction region of magnon-mediated spin torques and novel magnetic states

Zai-Dong Li(李再东)^1,2,3,†, Qi-Qi Guo(郭奇奇)¹, Yong Guo(郭永)⁴, Peng-Bin He(贺鹏斌)⁵, and Wu-Ming Liu(刘伍明)⁶

1 Department of Applied Physics, Hebei University of Technology, Tianjin 300401, China;
2 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China;
3 School of Science, Tianjin University of Technology, Tianjin 300384, China;
4 Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China;
5 School of Physics and Electronics, Hunan University, Changsha 410082, China;
6 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

Received:2021-04-15 Revised:2021-04-15 Accepted:2021-05-25 Published:2021-09-30
Contact: Zai-Dong Li E-mail:lizd@email.tjut.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61774001), the Natural Science Foundation of Hebei Province of China (Grant No. F2019202141), and the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, China (Grant No. KF201906).

摘要/Abstract

摘要： We determine the region in which the magnon-mediated spin torques exist. This region can be controlled by the spin waves. In terms of stability analysis of magnetization dynamics based on the spin-wave background, we obtain the instability conditions of spin waves. With these results, we find the relationship between unstable regions and the formation of Akhmediev breather, Kuznetsov-Ma breather and rogue waves. We establish the phase diagram of some novel magnetic excitaions.

关键词: magnon-mediated spin torque, instability, breather, phase diagram

Abstract: We determine the region in which the magnon-mediated spin torques exist. This region can be controlled by the spin waves. In terms of stability analysis of magnetization dynamics based on the spin-wave background, we obtain the instability conditions of spin waves. With these results, we find the relationship between unstable regions and the formation of Akhmediev breather, Kuznetsov-Ma breather and rogue waves. We establish the phase diagram of some novel magnetic excitaions.

Key words: magnon-mediated spin torque, instability, breather, phase diagram

中图分类号: (Magnetization dynamics)

75.78.-n

75.40.Gb (Dynamic properties?) 72.25.Ba (Spin polarized transport in metals)

Zai-Dong Li(李再东), Qi-Qi Guo(郭奇奇), Yong Guo(郭永), Peng-Bin He(贺鹏斌), and Wu-Ming Liu(刘伍明). Interaction region of magnon-mediated spin torques and novel magnetic states[J]. 中国物理B, 2021, 30(10): 107506-107506.

Zai-Dong Li(李再东), Qi-Qi Guo(郭奇奇), Yong Guo(郭永), Peng-Bin He(贺鹏斌), and Wu-Ming Liu(刘伍明). Interaction region of magnon-mediated spin torques and novel magnetic states[J]. Chin. Phys. B, 2021, 30(10): 107506-107506.

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Interaction region of magnon-mediated spin torques and novel magnetic states

Interaction region of magnon-mediated spin torques and novel magnetic states

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