Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques
- Authors
- Shiino, Takayuki; Oh, Se-Hyeok; Haney, Paul M.; Lee, Seo-Won; Go, Gyungchoon; Park, Byong-Guk; Lee, Kyung-Jin
- Issue Date
- 16-8월-2016
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.117, no.8
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 117
- Number
- 8
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/87813
- DOI
- 10.1103/PhysRevLett.117.087203
- ISSN
- 0031-9007
- Abstract
- We theoretically investigate the dynamics of antiferromagnetic domain walls driven by spin-orbit torques in antiferromagnet-heavy-metal bilayers. We show that spin-orbit torques drive antiferromagnetic domain walls much faster than ferromagnetic domain walls. As the domain wall velocity approaches the maximum spin-wave group velocity, the domain wall undergoes Lorentz contraction and emits spin waves in the terahertz frequency range. The interplay between spin-orbit torques and the relativistic dynamics of antiferromagnetic domain walls leads to the efficient manipulation of antiferromagnetic spin textures and paves the way for the generation of high frequency signals from antiferromagnets.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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