Antiferromagnetic structure in tetragonal CuMnAs thin films

Wadley, P. and Hills, Victoria Anne and Shahedkhah, M.R. and Edmonds, K.W. and Campion, R.P. and Novák, V. and Ouladdiaf, B. and Khalyavin, D. and Langridge, S. and Saidl, V. and Němec, P. and Rushforth, A.W. and Gallagher, B.L. and Dhesi, S.S. and Maccherozzi, F. and Železný, J. and Jungwirth, T. (2015) Antiferromagnetic structure in tetragonal CuMnAs thin films. Scientific Reports, 5 . 17079/1-17079/6. ISSN 2045-2322

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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.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1038/srep17079
Related URLs:
Depositing User: Edmonds, Kevin
Date Deposited: 07 Mar 2017 10:55
Last Modified: 23 Mar 2017 21:09
URI: http://eprints.nottingham.ac.uk/id/eprint/41045

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