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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

Victoria Anne Hills

M.R. Shahedkhah

K.W. Edmonds

R.P. Campion

V. Novák

B. Ouladdiaf

D. Khalyavin

S. Langridge

V. Saidl

P. Němec

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

B.L. Gallagher

S.S. Dhesi

F. Maccherozzi

J. Železný

T. Jungwirth

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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