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

Wadley, P.; Edmonds, K. W.; Shahedkhah, M. R.; Campion, R. P.; Gallagher, B. L.; Zelezny, J.; Kunes, J.; Novak, V.; Jungwirth, T.; Saidl, V.; Nemec, P.; Maccherozzi, F.; Dhesi, S. S.

doi:10.1038/s41598-017-11653-8

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

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Zelezny, J.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Wadley, P., Edmonds, K. W., Shahedkhah, M. R., Campion, R. P., Gallagher, B. L., Zelezny, J., et al. (2017). Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films. Scientific Reports, 7: 11147, pp. 1-6. doi:10.1038/s41598-017-11653-8.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-069A-0

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.