Antiferromagnetic structure in tetragonal CuMnAs thin films

Wadley, P.; Hills, Victoria Anne; Shahedkhah, M. R.; Edmonds, K. W.; Campion, R. P.; Nov�k, V.; Ouladdiaf, B.; Khalyavin, D.; Langridge, S.; Saidl, V.; N?mec, P.; Rushforth, A. W.; Gallagher, B. L.; Dhesi, S. S.; Maccherozzi, F.; �elezn�, J.; Jungwirth, T.

Abstract

Tetragonal CuMnAs is an antiferromagnetic material with favourable properties for applications in spintronics. Using a combination of neutron diffraction and x-ray magnetic linear dichroism, we determine the spin axis and magnetic structure in tetragonal CuMnAs, and reveal the presence of an interfacial uniaxial magnetic anisotropy. From the temperature-dependence of the neutron diffraction intensities, the Néel temperature is shown to be (480 ± 5) K. Ab initio calculations indicate a weak anisotropy in the (ab) plane for bulk crystals, with a large anisotropy energy barrier between in-plane and perpendicular-to-plane directions.

Citation

Wadley, P., Hills, V. A., Shahedkhah, M. R., Edmonds, K. W., Campion, R. P., Novák, V., …Jungwirth, T. (2015). Antiferromagnetic structure in tetragonal CuMnAs thin films. Scientific Reports, 5(1), Article 17079. https://doi.org/10.1038/srep17079

• Journal Article Type: Article
• Acceptance Date: Oct 26, 2015
• Online Publication Date: Nov 25, 2015
• Publication Date: Nov 25, 2015
• Deposit Date: Mar 7, 2017
• Publicly Available Date: Mar 7, 2017
• Journal: Scientific Reports
• Electronic ISSN: 2045-2322
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 5
• Issue: 1
• Article Number: 17079
• DOI: https://doi.org/10.1038/srep17079
• Public URL: https://nottingham-repository.worktribe.com/output/765477
• Publisher URL: http://www.nature.com/articles/srep17079
• Related Public URLs: http://www.nature.com/articles/srep17079
• Contract Date: Mar 7, 2017