title: Antiferromagnetic structure in tetragonal CuMnAs thin films.
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.
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: Wadley
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: V
authors.initials: V
authors.lastname: Hills
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: M R
authors.initials: MR
authors.lastname: Shahedkhah
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: K W
authors.initials: KW
authors.lastname: Edmonds
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: R P
authors.initials: RP
authors.lastname: Campion
authors.affiliation: Institute of Physics ASCR, v. v. i., Cukrovarnicka 10, 16253 Prague 6, Czech Republic.
authors.forename: V
authors.initials: V
authors.lastname: Novák
authors.affiliation: Institut Laue-Langevin, 6 Rue Jules Horowitz, 38042 Grenoble, France.
authors.forename: B
authors.initials: B
authors.lastname: Ouladdiaf
authors.affiliation: ISIS, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Science and Technology Facilities Council, Oxon OX11 0QX, United Kingdom.
authors.forename: D
authors.initials: D
authors.lastname: Khalyavin
authors.affiliation: ISIS, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Science and Technology Facilities Council, Oxon OX11 0QX, United Kingdom.
authors.forename: S
authors.initials: S
authors.lastname: Langridge
authors.affiliation: Faculty of Mathematics and Physics, Charles University in Prague, 121 16 Prague, Czech Republic.
authors.forename: V
authors.initials: V
authors.lastname: Saidl
authors.affiliation: Faculty of Mathematics and Physics, Charles University in Prague, 121 16 Prague, Czech Republic.
authors.forename: P
authors.initials: P
authors.lastname: Nemec
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: A W
authors.initials: AW
authors.lastname: Rushforth
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.
authors.forename: B L
authors.initials: BL
authors.lastname: Gallagher
authors.affiliation: Diamond Light Source, Chilton, Didcot, Oxfordshire OX11 0DE, United Kingdom.
authors.forename: S S
authors.initials: SS
authors.lastname: Dhesi
authors.affiliation: Diamond Light Source, Chilton, Didcot, Oxfordshire OX11 0DE, United Kingdom.
authors.forename: F
authors.initials: F
authors.lastname: Maccherozzi
authors.affiliation: Institute of Physics ASCR, v. v. i., Cukrovarnicka 10, 16253 Prague 6, Czech Republic.|Faculty of Mathematics and Physics, Charles University in Prague, 121 16 Prague, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Železný
authors.affiliation: School of Physics and Astronomy, University of Nottingham, NG7 2RD, United Kingdom.|Institute of Physics ASCR, v. v. i., Cukrovarnicka 10, 16253 Prague 6, Czech Republic.
authors.forename: T
authors.initials: T
authors.lastname: Jungwirth