| Influence of rare earth metal Ho on the interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers | |
| Liu, Long1,2; Zhao, Xiaotian1; Liu, Wei1; Song, Yuhang1,2; Zhao, Xinguo1; Zhang, Zhidong1 | |
| Corresponding Author | Liu, Wei(wliu@imr.ac.cn) |
| 2020-06-21 | |
| Source Publication | NANOSCALE
 |
| ISSN | 2040-3364 |
| Volume | 12Issue:23Pages:12444-12453 |
| Abstract | 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. |
| Funding Organization | State Key Project of Research and Development of China ; National Nature Science Foundation of China |
| DOI | 10.1039/d0nr02168g |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000544063600021 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139682 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Wei |
| Affiliation | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| Recommended Citation 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. |
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