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Imaging current-induced switching of antiferromagnetic domains in CuMnAs

Grzybowski, M.J.; Wadley, P.; Edmonds, K.W.; Beardsley, R.; Hills, Victoria Anne; Campion, R.P.; Gallagher, B.L.; Chauhan, Jasbinder S.; Nov�k, V.; Jungwirth, T.; Maccherozzi, F.; Dhesi, S.S.

Imaging current-induced switching of antiferromagnetic domains in CuMnAs Thumbnail


Authors

M.J. Grzybowski

PETER WADLEY PETER.WADLEY@NOTTINGHAM.AC.UK
Royal Society Principal Research Fellow

KEVIN EDMONDS kevin.edmonds@nottingham.ac.uk
Associate Professor & Reader in Physics

R. Beardsley

Victoria Anne Hills

B.L. Gallagher

Jasbinder S. Chauhan

V. Nov�k

TOMAS JUNGWIRTH tomas.jungwirth@nottingham.ac.uk
Research Professor of Ferromagnetic Semiconductors

F. Maccherozzi

S.S. Dhesi



Abstract

The magnetic order in antiferromagnetic materials is hard to control with external magnetic fields. Using X-ray Magnetic Linear Dichroism microscopy, we show that staggered effective fields generated by electrical current can induce modification of the antiferromagnetic domain structure in microdevices fabricated from a tetragonal CuMnAs thin film. A clear correlation between the average domain orientation and the anisotropy of the electrical resistance is demonstrated, with both showing reproducible switching in response to orthogonally applied current pulses. However, the behavior is inhomogeneous at the submicron level, highlighting the complex nature of the switching process in multi-domain antiferromagnetic films.

Citation

Grzybowski, M., Wadley, P., Edmonds, K., Beardsley, R., Hills, V. A., Campion, R., …Dhesi, S. (2017). Imaging current-induced switching of antiferromagnetic domains in CuMnAs. Physical Review Letters, 118(5), Article 057701. https://doi.org/10.1103/PhysRevLett.118.057701

Journal Article Type Article
Acceptance Date Dec 27, 2016
Online Publication Date Jan 31, 2017
Publication Date Feb 3, 2017
Deposit Date Mar 7, 2017
Publicly Available Date Mar 7, 2017
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 118
Issue 5
Article Number 057701
DOI https://doi.org/10.1103/PhysRevLett.118.057701
Public URL https://nottingham-repository.worktribe.com/output/838280
Publisher URL http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.057701
Additional Information Imaging Current-Induced Switching of Antiferromagnetic Domains in CuMnAs. M.J. Grzybowski, P. Wadley, K.W. Edmonds, R. Beardsley, V. Hills, R.P. Campion, B.L. Gallagher, J.S. Chauhan, V. Novak, T. Jungwirth, F. Maccherozzi, and S.S. Dhesi, Phys. Rev. Lett. 118, 057701

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