Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 24: Spin Transport and Orbitronics, Spin-Hall Effects
MA 24.2: Vortrag
Mittwoch, 7. September 2022, 15:15–15:30, H37
Spin and orbital transport in rare earth dichalcogenides: The case of EuS2 — •Mahmoud Zeer1,2, Dongwook Go1,3, Johanna P Carbone1,2, Tom G Saunderson3, Matthias Redies1,2, Mathias Kläui3, Jamal Ghabboun4, Wulfhekel Wulf3, Stefan Stefan Blügel1,2, and Yuriy Mokrousov1,3 — 1Peter Grünberg Institute and Institute for Advanced Simulation,Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — 2Department of Physics, RWTH Aachen University, 52056 Aachen, Germany — 3Institute of Physics, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany — 4Department of Physics, Bethlehem University, Bethlehem, Palestine
With first principles the electronic, magnetic and transport properties of rare-earth dichalcogenides taking a monolayer of the H-phase EuS2 as a representative. We predict that the H-phase of the EuS2 monolayer exhibits a half-metallic behaviour upon doping with a very high magnetic moment. We find the EuS2 is very sensitive to the value of Coulomb repulsion U. We further predict that the non-trivial electronic structure of EuS2 directly results in a pronounced anomalous Hall effect with non-trivial band topology. Moreover, while we find that the spin Hall effect closely follows the anomalous Hall effect in the system, the orbital complexity of the system results in a very large orbital Hall effect, whose properties depend very sensitively on the strength of correlations. Our findings thus promote rare earth based dichalcogenides as a promising platform for topological spintronics and orbitronics. Work funded by (MMBF-01DH16027, Zeer et al., arXiv:2201.11017