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| Tunable and inhomogeneous current-induced THz-oscillation dynamics in the ferrimagnetic spin-chain | |
| 2024-12 | |
| 发表期刊 | COMMUNICATIONS PHYSICS
 |
| ISSN | 2399-3650 (online) |
| EISSN | 2399-3650 |
| 卷号 | 7期号:1 |
| 发表状态 | 已发表 |
| DOI | 10.1038/s42005-024-01580-2 |
| 摘要 | Ferrimagnets perform versatile properties, attributed to their antiferromagnetic sublattice coupling and finite net magnetization. Despite extensive research, the inhomogeneous dynamics in ferrimagnets, including domain walls and magnons, remain not fully understood. Therefore, we adopted a multi-spin model by considering the effect of the spin torques and explored the localized phase-dependent and inhomogeneous THz-oscillation dynamics in a ferrimagnetic spin-chain. Our results demonstrate that the exchange oscillation mode, induced by spin transfer torque, exhibits three typical phases, and the oscillation frequency is dominated by a joint effective field derived in the spin-chain. We also found that the localized spin configurations can be used to tune the bandwidth and sensitivity of the frequency response. Furthermore, we propose an anti-parallel exchange length to reveal the inhomogeneity in the ferrimagnetic spin-chain, which could serve as a valuable tool for characterizing the spin dynamics of these systems. Our findings offer understandings beyond uniform spin-dynamics in ferrimagnets. © The Author(s) 2024. |
| 关键词 | Domain walls Ferrimagnetism Frequency response Antiferromagnetic sublattices Ferrimagnetics Ferrimagnets Localised Magnons Property Spin chains Spin models Spin torque Tunables |
| URL | 查看原文 |
| 收录类别 | EI |
| 语种 | 英语 |
| 出版者 | Nature Research |
| EI入藏号 | 20241215767133 |
| EI主题词 | Spin dynamics |
| EI分类号 | 701.2 Magnetism: Basic Concepts and Phenomena ; 708.4 Magnetic Materials ; 931.3 Atomic and Molecular Physics |
| 原始文献类型 | Journal article (JA) |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/359866 |
| 专题 | 信息科学与技术学院 信息科学与技术学院_硕士生 信息科学与技术学院_PI研究组_祝智峰组 |
| 通讯作者 | Liang, Gengchiau |
| 作者单位 | 1.Department of Electrical and Computer Engineering, National University of Singapore, Singapore; 117576, Singapore; 2.School of Information Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 3.Industry-Academia Innovation School, National Yang Ming Chiao Tung University, Hsinchu; 300093, Taiwan |
| 推荐引用方式 GB/T 7714 | Cai, Baofang,Zhang, Xue,Zhu, Zhifeng,et al. Tunable and inhomogeneous current-induced THz-oscillation dynamics in the ferrimagnetic spin-chain[J]. COMMUNICATIONS PHYSICS,2024,7(1). |
| APA | Cai, Baofang,Zhang, Xue,Zhu, Zhifeng,&Liang, Gengchiau.(2024).Tunable and inhomogeneous current-induced THz-oscillation dynamics in the ferrimagnetic spin-chain.COMMUNICATIONS PHYSICS,7(1). |
| MLA | Cai, Baofang,et al."Tunable and inhomogeneous current-induced THz-oscillation dynamics in the ferrimagnetic spin-chain".COMMUNICATIONS PHYSICS 7.1(2024). |
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