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Spin-Orbit Torque in Structures With Magnetization-Compensated MnGa/Co2MnSi Bilayer
| Title: | Spin-Orbit Torque in Structures With Magnetization-Compensated MnGa/Co2MnSi Bilayer |
| Authors: | Hara, Takuya Browse this author | | Jono, Kohey Browse this author | | Yamanouchi, Michihiko Browse this author →KAKEN DB | | Uemura, Tetsuya Browse this author →KAKEN DB |
| Keywords: | Co2MnSi (CMS) | | MnxGa1 (MnGa) | | spin-orbit torque (SOT) | | synthetic antiferromagnetic (SAF) structure |
| Issue Date: | Aug-2022 |
| Publisher: | IEEE (Institute of Electrical and Electronics Engineers) |
| Journal Title: | IEEE transactions on magnetics |
| Volume: | 58 |
| Issue: | 8 |
| Start Page: | 1400104 |
| Publisher DOI: | 10.1109/TMAG.2021.3139899 |
| Abstract: | We have systematically investigated the spin-orbit torque (SOT)-induced effective magnetic field in a structure consisting of a Ta heavy metal layer and an antiferromagnetically coupled Mn1.8Ga1/Co2MnSi (CMS) bilayer around the magnetization compensation point by varying CMS film thickness. The efficiency of SOT generation takes the maximum around the compensation point, and it is approximately six times as large compared with that in the devices with a MnGa single structure. The enhancement of SOT efficiency can be explained mainly by the reduction in saturation magnetic moment around the compensation point. Moreover, a significant enhancement of the effective spin Hall angle was observed around the compensation point because of the inversion of the magnetization configuration before and after the compensation point. |
| Rights: | © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/86827 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 植村 哲也
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