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Antiferromagnetic structure in tetragonal CuMnAs thin films

Wadley, P.; Hills, Victoria Anne; Shahedkhah, M.R.; Edmonds, K.W.; Campion, R.P.; Novák, V.; Ouladdiaf, B.; Khalyavin, D.; Langridge, S.; Saidl, V.; Němec, P.; Rushforth, A.W.; Gallagher, B.L.; Dhesi, S.S.; Maccherozzi, F.; Železný, J.; Jungwirth, T.

Authors

P. Wadley

V. Saidl

P. Němec

A.W. Rushforth Andrew.Rushforth@nottingham.ac.uk

B.L. Gallagher

S.S. Dhesi

F. Maccherozzi

J. Železný

T. Jungwirth

Victoria Anne Hills

M.R. Shahedkhah

K.W. Edmonds

R.P. Campion

V. Novák

B. Ouladdiaf

D. Khalyavin

S. Langridge

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.

Journal Article Type Article
Publication Date Nov 25, 2015
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 5
Article Number 17079
DOI https://doi.org/10.1038/srep17079
Publisher URL http://www.nature.com/articles/srep17079
Related Public URLs http://www.nature.com/articles/srep17079
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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