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Antiferromagnetic structure in tetragonal CuMnAs thin films

DOI: 10.1038/srep17079 DOI Help
PMID: 26602978 PMID Help

Authors: P. Wadley (University of Nottingham) , V. Hills (University of Nottingham) , M. R. Shahedkhah (University of Nottingham) , K. W. Edmonds (University of Nottingham) , R. P. Campion (University of Nottingham) , V. Novák (Institute of Physics ASCR) , B. Ouladdiaf (Institut Laue-Langevin) , D. Khalyavin (ISIS Pulsed Neutron and Muon Source) , S. Langridge (ISIS, STFC Rutherford Appleton Laboratory) , V. Saidl (University in Prague) , P. Nemec (University in Prague) , A. W. Rushforth (University of Nottingham) , B. L. Gallagher (University of Nottingham) , S. S. Dhesi (Diamond Light Source) , F. Maccherozzi (Diamond Light Source) , J. Železný (Institute of Physics ASCR) , T. Jungwirth (University of Nottingham)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scientific Reports , VOL 5

State: Published (Approved)
Published: November 2015
Diamond Proposal Number(s): 9993

Open Access Open Access

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 Keywords: Electronic Devices; Magnetic Properties

Subject Areas: Materials


Instruments: I06-Nanoscience