Optical spin-orbit torque in heavy metal-ferromagnet heterostructuresopen access
- Authors
- Choi, Gyung-Min; Oh, Jung Hyun; Lee, Dong-Kyu; Lee, Seo-Won; Kim, Kun Woo; Lim, Mijin; Min, Byoung-Chul; Lee, Kyung-Jin; Lee, Hyun-Woo
- Issue Date
- Mar-2020
- Publisher
- Nature Research
- Citation
- Nature Communications, v.11, no.1
- Journal Title
- Nature Communications
- Volume
- 11
- Number
- 1
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/62284
- DOI
- 10.1038/s41467-020-15247-3
- ISSN
- 2041-1723
2041-1723
- Abstract
- Spin current generation through the spin-orbit interaction in non-magnetic materials lies at the heart of spintronics. When the generated spin current is injected to a ferromagnet, it produces spin-orbit torque and manipulates magnetization efficiently. Optically generated spin currents are expected to be superior to their electrical counterparts in terms of the manipulation speed. Here we report optical spin-orbit torques in heavy metal/ferromagnet heterostructures. The strong spin-orbit coupling of heavy metals induces photo-excited carriers to be spin-polarized, and their transport from heavy metals to ferromagnets induces a torque on magnetization. Our results demonstrate that heavy metals can generate spin-orbit torque not only electrically but also optically. © 2020, The Author(s).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/62284)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.