Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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


We theoretically investigate 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 approches the maximum group velocity of spin-waves, the domain wall undergoes the Lorentz contraction and emits spin-waves in terahertz frequecy ranges. This relativistic dynamics of antiferromagnetic domain wall shows a key role of spin-orbit torque in the efficient manipulation of antiferromagnetic spin textures and paves the way for the generation of high frequency signals in antiferromagnets.
Physical Review Letters


Shiino, T. , Oh, S. , Haney, P. , Lee, S. , Go, G. , Park, B. and Lee, K. (2016), Antiferromagnetic domain wall motion driven by spin-orbit torques, Physical Review Letters, [online],, (Accessed March 3, 2024)
Created August 15, 2016, Updated October 12, 2021