Influence of rare earth metal Ho on the interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers
文献类型：期刊论文
| 作者 | Liu, Long1,2; Zhao, Xiaotian2; Liu, Wei2; Song, Yuhang1,2; Zhao, Xinguo2; Zhang, Zhidong2 |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2020-06-21 |
| 卷号 | 12期号:23页码:12444-12453 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/d0nr02168g |
| 通讯作者 | Liu, Wei(wliu@imr.ac.cn) |
| 英文摘要 | Owing to the large spin-orbit coupling and tunable magnetization, heavy rare-earth metals Gd and Tb have great effects on the enhancement of spin-orbit torque (SOT) and fast domain wall (DW) motion. However, the reports on the heavy rare-earth metal Ho with more 4f electrons in the research of spintronics are limited. In this work, we found that the interfacial Dzyaloshinskii-Moriya interaction (DMI) and SOT in Pt/Co/Ho multilayers can be strongly influenced by changing the thickness of the Ho (t(Ho)) layer. Att(Ho)= 2.4 nm, DMI exchange constant |D| and spin torque efficiency xi(DL)reach maximum values of 1.24 mJ m(-2)and 0.137 respectively, which are comparable with those in other Pt/Co/nonmagnetic (NM) layer structures. Deterministic current-induced magnetization switching with a low critical current density of 10(6)A cm(-2)can be realized whent(Ho)is less than 5 nm. The Neel-type DW with left-handed chirality and positive signDcan be determined by observing the current-induced asymmetric DW motion. Our results are helpful to prompt the application of heavy rare-earth elements in the fields of the DMI, SOT and chiral DW dynamics. |
| 资助项目 | State Key Project of Research and Development of China[2017YFA0206302] ; National Nature Science Foundation of China[51590883] ; National Nature Science Foundation of China[51971219] ; National Nature Science Foundation of China[51801212] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000544063600021 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | State Key Project of Research and Development of China ; National Nature Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/139681]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Wei |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Long,Zhao, Xiaotian,Liu, Wei,et al. Influence of rare earth metal Ho on the interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers[J]. NANOSCALE,2020,12(23):12444-12453. |
| APA | Liu, Long,Zhao, Xiaotian,Liu, Wei,Song, Yuhang,Zhao, Xinguo,&Zhang, Zhidong.(2020).Influence of rare earth metal Ho on the interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers.NANOSCALE,12(23),12444-12453. |
| MLA | Liu, Long,et al."Influence of rare earth metal Ho on the interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers".NANOSCALE 12.23(2020):12444-12453. |
入库方式： OAI收割
来源：金属研究所
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