Manipulation of spin-orbit-torque efficiency via designing gradient structure in ferrimagnetic Ta / Tb-Co / Pt multilayers
文献类型：期刊论文
| 作者 | Liu, Long; Wu, Jinxiang; Ye, Zhixing; Zhao, Xiaotian; Liu, Wei; Zhang, Zhidong |
| 刊名 | PHYSICAL REVIEW APPLIED
 |
| 出版日期 | 2024-04-05 |
| 卷号 | 21期号:4页码:13 |
| ISSN号 | 2331-7019 |
| DOI | 10.1103/PhysRevApplied.21.044013 |
| 通讯作者 | Zhao, Xiaotian(xtzhao@imr.ac.cn) |
| 英文摘要 | The search for material combinations that exhibit highly efficient current-induced spin-orbit torque (SOT) is crucial for the development of next-generation nonvolatile spintronics devices. Existing research results suggest that the spin Hall effect (SHE) in heavy metals with strong spin-orbit coupling or the interfacial Rashba effect at the heavy-metal-ferromagnet interface are the primary sources of spin currents. Here, we present experimental evidence that ferrimagnetic Tb-Co multilayers, engineered with an artificially designed composition gradient, exhibit a bulk Rashba effect originating from gradient-related spatial inversion symmetry breaking, which provides sizable spin currents for magnetization switching. The two types of spin currents, originating separately from the SHE and the bulk Rashba effect, would cooperate or compete with each other, depending highly on the gradient direction, ultimately resulting in a weakening or enhancement of SOT efficiency. Our findings regarding the gradient-related manipulation of currentinduced SOT provide valuable insights for the development of highly efficient spintronics devices based on ferrimagnetic materials. |
| 资助项目 | National Natural Science Foundation of China[52031014] ; National Natural Science Foundation of China[52301254] ; National Natural Science Foundation of China[52271193] ; National Natural Science Foundation of China[52171196] ; IMR Innovation Fund[2023-PY02] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001218230100001 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; IMR Innovation Fund |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Xiaotian |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Long,Wu, Jinxiang,Ye, Zhixing,et al. Manipulation of spin-orbit-torque efficiency via designing gradient structure in ferrimagnetic Ta / Tb-Co / Pt multilayers[J]. PHYSICAL REVIEW APPLIED,2024,21(4):13. |
| APA | Liu, Long,Wu, Jinxiang,Ye, Zhixing,Zhao, Xiaotian,Liu, Wei,&Zhang, Zhidong.(2024).Manipulation of spin-orbit-torque efficiency via designing gradient structure in ferrimagnetic Ta / Tb-Co / Pt multilayers.PHYSICAL REVIEW APPLIED,21(4),13. |
| MLA | Liu, Long,et al."Manipulation of spin-orbit-torque efficiency via designing gradient structure in ferrimagnetic Ta / Tb-Co / Pt multilayers".PHYSICAL REVIEW APPLIED 21.4(2024):13. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。