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

DOI: 10.1038/s41598-017-11653-8 DOI Help

Authors: P. Wadley (University of Nottingham) , K. W. Edmonds (University of Nottingham) , M. R. Shahedkhah (University of Nottingham) , R. P. Campion (University of Nottingham) , B. L. Gallagher (University of Nottingham) , J. Železný (Institute of Physics, Czech Academy of Sciences; Max Planck Institute for Chemical Physics of Solids) , J. Kuneš (Institute of Physics, Czech Academy of Sciences; Institute of Solid State Physics, TU Wien) , V. Novák (Institute of Physics, Czech Academy of Sciences) , T. Jungwirth (University of Nottingham; Institute of Physics, Czech Academy of Sciences) , V. Saidl (Institute of Physics, Czech Academy of Sciences; Charles University) , P. Němec (Charles University) , F. Maccherozzi (Diamond Light Source) , S. S. Dhesi (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scientific Reports , VOL 7

State: Published (Approved)
Published: September 2017
Diamond Proposal Number(s): 9993

Open Access Open Access

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.

Journal Keywords: Magnetic properties and materials; Spintronics

Subject Areas: Physics, Materials

Instruments: I06-Nanoscience


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