Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques

Takayuki Shiino, Se Hyeok Oh, Paul M. Haney, Seo Won Lee, Gyungchoon Go, Byong Guk Park, Kyung Jin Lee

Research output: Contribution to journalArticlepeer-review

193 Citations (Scopus)


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.

Original languageEnglish
Article number087203
JournalPhysical review letters
Issue number8
Publication statusPublished - 2016 Aug 16

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques'. Together they form a unique fingerprint.

Cite this