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Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films

Authors

PETER WADLEY PETER.WADLEY@NOTTINGHAM.AC.UK
Assistant Professor in Experimentalcondensed Matter Physics

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

M.R. Shahedkhah

B.L. Gallagher

J.

J. Kunes

V.

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

V. Saidl

P. N?mec

F. Maccherozzi

S.S. Dhesi



Abstract

Using x-ray magnetic circular and linear dichroism techniques, we demonstrate a collinear exchange coupling between an epitaxial antiferromagnet, tetragonal CuMnAs, and an Fe surface layer. A small uncompensated Mn magnetic moment is observed which is antiparallel to the Fe magnetization. The staggered magnetization of the 5?nm thick CuMnAs layer is rotatable under small magnetic fields, due to the interlayer exchange coupling. This allows us to obtain the x-ray magnetic linear dichroism spectra for different crystalline orientations of CuMnAs in the (001) plane. This is a key parameter for enabling the understanding of domain structures in CuMnAs imaged using x-ray magnetic linear dichroism microscopy techniques.

Citation

Wadley, P., Edmonds, K., Shahedkhah, M., Campion, R., Gallagher, B., ┼Żelezný, J., …Dhesi, S. (in press). Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films. Scientific Reports, 7, Article 11147. https://doi.org/10.1038/s41598-017-11653-8

Journal Article Type Article
Acceptance Date Aug 25, 2017
Online Publication Date Sep 11, 2017
Deposit Date Sep 25, 2017
Publicly Available Date Sep 25, 2017
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 7
Article Number 11147
DOI https://doi.org/10.1038/s41598-017-11653-8
Public URL https://nottingham-repository.worktribe.com/output/882018
Publisher URL https://www.nature.com/articles/s41598-017-11653-8.pdf

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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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