The coupling of real and momentum space is utilized to tailor electronic properties of the collinear metallic antiferromagnet Mn2Au by aligning the real space Néel vector indicating the direction of the staggered magnetization. Pulsed magnetic fields of 60 T were used to orient the sublattice magnetizations of capped epitaxial Mn2Au(001) thin films perpendicular to the applied field direction by a spin-flop transition. The electronic structure and its corresponding changes were investigated by angular-resolved photoemission spectroscopy with photon energies in the vacuum-ultraviolet, soft, and hard X-ray range. The results reveal an energetic rearrangement of conduction electrons propagating perpendicular to the Néel vector. They confirm previous predictions on the origin of the Néel spin-orbit torque and anisotropic magnetoresistance in Mn2Au and reflect the combined antiferromagnetic and spin-orbit interaction in this compound leading to inversion symmetry breaking.

Deutsches Elektronen Synchrotron DESY 22607 Hamburg Germany

Dresden High Magnetic Field Laboratory Helmholtz Zentrum Dresden Rossendorf 01328 Dresden Germany

Institut für Physik Johannes Gutenberg Universität Staudingerweg 7 D 55099 Mainz Germany

Institute of Physics Academy of Sciences of the Czech Republic Cukrovarnická 10 162 00 Praha 6 Czech Republic

New Technologies Research Centre University of West Bohemia Univerzitni 8 306 14 Pilsen Czech Republic

Swiss Light Source Paul Scherrer Institut CH 5232 Villigen PSI Switzerland

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