Electrical control of 180° domain walls in an antiferromagnet

Amin, O. J.; Reimers, S.; Maccherozzi, F.; Dhesi, S. S.; Novák, V.; Campion, R. P.; Edmonds, K. W.; Wadley, P.

Abstract

We demonstrate the reversible current-induced motion of 180° antiferromagnetic domain walls in a CuMnAs device. By controlling the magnitude and direction of the current pulse, the position of a domain wall can be switched between three distinct pinning sites. The domain wall motion is attributed to a field-like spin–orbit torque that induces the same sense of rotation on each magnetic sublattice, owing to the crystal symmetry of CuMnAs. Domain wall motion is observed for current densities down to ≈2.5×1010 A/m2 at room temperature.

Citation

Amin, O. J., Reimers, S., Maccherozzi, F., Dhesi, S. S., Novák, V., Campion, R. P., Edmonds, K. W., & Wadley, P. (2023). Electrical control of 180° domain walls in an antiferromagnet. APL Materials, 11(9), Article 091112. https://doi.org/10.1063/5.0156508

• Journal Article Type: Article
• Acceptance Date: Aug 28, 2023
• Online Publication Date: Sep 18, 2023
• Publication Date: Sep 1, 2023
• Deposit Date: Oct 2, 2023
• Publicly Available Date: Oct 3, 2023
• Journal: APL Materials
• Electronic ISSN: 2166-532X
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 9
• Article Number: 091112
• DOI: https://doi.org/10.1063/5.0156508
• Keywords: General Engineering; General Materials Science
• Public URL: https://nottingham-repository.worktribe.com/output/25395204
• Publisher URL: https://pubs.aip.org/aip/apm/article/11/9/091112/2911563/Electrical-control-of-180-domain-walls-in-an