Electrical control of 180° domain walls in an antiferromagnet

0576639 - FZÚ 2024 RIV US eng J - Journal Article
Amin, O. J. - Reimers, S. - Maccherozzi, F. - Dhesi, S.S. - Novák, Vít - Campion, R. P. - Edmonds, K. W. - Wadley, P.
Electrical control of 180° domain walls in an antiferromagnet.
APL Materials. Roč. 11, č. 9 (2023), č. článku 091112. ISSN 2166-532X. E-ISSN 2166-532X
EU Projects: European Commission(XE) 766566 - ASPIN
Institutional support: RVO:68378271
Keywords : CuMnAs device * antiferromagnets * Néel spin–orbit torques * domain walls
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 6.1, year: 2022
Method of publishing: Open access

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.
Permanent Link: https://hdl.handle.net/11104/0349731