Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 41: Spintronics (Other Effects)
MA 41.7: Vortrag
Donnerstag, 21. März 2024, 16:45–17:00, H 2013
Spin-splitting in collinear antiferromagnetic MnTe : Inception and manifestations — •Jan Minár1, Sunil Wilfred Dsouza1, Juraj Krempaský2, Libor Šmejkal3,4, Jan Hugho Dil5,2, and Tomáš Jungwirth4,6 — 1New Technologies Research Centre, University of West Bohemia, Univerzitní 8, CZ-306 14 Pilsen, Czech Republic. — 2Photon Science Division, Paul Scherrer Institut, CH-5232 Villigen, Switzerland. — 3Institut für Physik, Johannes Gutenberg Universität Mainz, D-55099 Mainz, Germany. — 4Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10, 162 00 Praha 6 Czech Republic. — 5Institut de Physique, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland. — 6School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
We have explored Kramers spin non-degenerate states in MnTe by investigating the spin-polarized electronic structure of MnTe by means of one-step model Angle Resolved photoemission (ARPES) calculations within the fully relativistic multiple scattering Korringa-Kohn-Rostoker Green function approach. ARPES spectral weight related to non-symmorphic symmetry and signatures corresponding to the surface resonance contributions from Te and Mn states at respective binding energies were identified. Excellent agreement between theory and experiments reveals that the spin splitting stems from the local crystal anisotropy without requiring strong electronic correlations[1].
[1] J. Krempaský et al.,(2023),arXiv:2308.10681 (Accepted in Nature)
Keywords: Kramers spin degeracy; spintronics; Antiferromagnets; ARPES; SPRKKR