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Special Issue:
SPECIAL TOPIC — Advanced magnonics
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| SPECIAL TOPIC — Advanced magnonics |
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Propagation, generation, and utilization of topologically trivial magnetic solitons in magnetic nanowires |
| Kai-Tao Huang(黄铠涛) and X. S. Wang(王宪思)† |
| School of Physics and Electronics, Hunan University, Changsha 410082, China |
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Abstract Magnetic solitons are nonlinear, local excitations in magnetic systems. In this study, we theoretically and numerically investigate the properties and generation of one-dimensional (1D) topologically trivial magnetic solitons in ferromagnetic nanowires. An approximate analytical soliton solution described by two free parameters is validated by comparison with the micromagnetic simulation. Across an interface between two media of different anisotropy, the reflection and refraction of a soliton are highly nonlinear, which differ from linear spin waves. A pair of magnetic solitons that propagate in opposite directions can be generated by alternately applying magnetic-field or spin-polarized-current pulses of opposite directions to at least two successive regions. Each soliton corresponds to a soliton solution that can be controlled by the generation process. These magnetic solitons can be used to drive domain wall motion over a distance determined by the soliton magnitude, allowing for discrete manipulation of domain walls compatible with the digital nature of information technology. Our findings pave the way for the application of topologically trivial solitons in spintronics.
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Received: 01 April 2025
Revised: 24 July 2025
Accepted manuscript online: 28 July 2025
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PACS:
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75.78.-n
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(Magnetization dynamics)
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05.45.Yv
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(Solitons)
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| Fund: Project supported by the National Natural Science Foundation of China (Grants Nos. 11804045 and 12174093), the Natural Science Foundation of Hunan Province of China (Grant No. 2025JJ60001), and the Fundamental Research Funds for the Central Universities. |
Corresponding Authors:
X. S. Wang
E-mail: justicewxs@hnu.edu.cn
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Cite this article:
Kai-Tao Huang(黄铠涛) and X. S. Wang(王宪思) Propagation, generation, and utilization of topologically trivial magnetic solitons in magnetic nanowires 2025 Chin. Phys. B 34 107502
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