SurfaceScience21 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 37: Poster Session III: Surface magnetism III
O 37.5: Poster
Dienstag, 2. März 2021, 10:30–12:30, P
Néel vector induced manipulation of valence states in the collinear antiferromagnet Mn2Au — •Hans-Joachim Elmers1, S. V. Chernov1, S. P. Bommanaboyena1, S. Yu. Bodnar1, K. Medjanik1, S. Babenkov1, O. Fedchenko1, D. Vasilyev1, S. Y. Agustsson1, C. Schlueter2, A. Gloskovskii2, Y. Matveyev2, V. N. Strocov5, Y. Skourski3, S. Dsouza4, J. Minar4, L. Šmejkal1, J. Sinova1, M. Klaeui1, G. Schoenhense1, and M. Jourdan1 — 1Institut für Physik, Universität Mainz, Germany — 2DESY, Hamburg, Germany — 3Helmholtz-Zentrum Dresden-Rossendorf, Germany — 4University of West Bohemia, Czech Republic — 5Paul Scherrer Institut, Switzerland
Manipulation of the electronic valence states of the collinear metallic antiferromagnet Mn2Au was achieved by reorienting the direction of the staggered magnetisation (Néel vector). Pulsed magnetic fields of 50 T were used to direct the sublattice magnetisations of capped epitaxial Mn2Au (001) thin films perpendicular to the applied field direction by a spin-flop transition. The electronic structure was investigated by hard X-ray angular-resolved photoemission spectroscopy. Our results confirm that the magnetic order parameter in real space provokes considerable changes of electronic states in reciprocal space near the Fermi Level and close to the X points. [1] ACS Nano 14, 17554 (2020).