Magnetization dynamics driven by angle-dependent spin-orbit spin-transfer torque
- Authors
- Lee, Seo-Won; Lee, Kyung-Jin
- Issue Date
- 11월-2015
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Spin-orbit torque; Magnetization switching; Domain wall motion
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.67, no.10, pp.1848 - 1852
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 67
- Number
- 10
- Start Page
- 1848
- End Page
- 1852
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/92056
- DOI
- 10.3938/jkps.67.1848
- ISSN
- 0374-4884
- Abstract
- Spin-orbit torque allows efficient control of the magnetization by using the in-plane current. Recent experiments found a strong angular dependence of spin-orbit torque. We theoretically investigate magnetization switching and domain wall motion induced by an angle-dependent spinorbit torque in perpendicularly magnetized layers. We obtain analytic expressions for the switching current and the domain wall velocity, which are in agreement with numerical results. Based on the expressions, we find that a spin-orbit torque that increases with increasing polar angle of the magnetization is beneficial for both switching and domain wall motion. Our result will serve as a guideline to design and interpret switching and domain wall experiments based on the spin-orbit torque.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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