SKM 2023 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 7: 2D Materials and their Heterostructures IV
DS 7.2: Vortrag
Dienstag, 28. März 2023, 11:30–11:45, SCH A 316
Magnetically induced band splitting of the exfoliated antiferromagnet MnPS3 revealed by temperature dependent µ-ARPES — •J. Strasdas1, B. Pestka1, M. Rybak2, A. K. Budniak3, N. Leuth1, H. Boban4, I. Cojocariu4, D. Baranowski4, V. Feyer4, J. Avila5, P. Dudin5, Y. Amouyal6, L. Plucinski4, E. Lifshitz3, M. Birowska7, and M. Morgenstern1 — 1II. Institute of Physics B and JARA-FIT, RWTH-Aachen University, Germany — 2Department of Semiconductor Materials Engineering Wrocław University of Science and Technology, Poland — 3Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology insistute and Helen Diller Quantum Center, Technion, Israel Institute of Technology, Israel — 4Forschungszentrum Jülich, Peter Grünberg Institute (PGI-6), Germany — 5Synchrotron-SOLEIL, Université Paris-Saclay, France — 6Department of Materials Science and Engineering, Technion, Israel Institute of Technology — 7Institute of Theoretical Physics, University of Warsaw, Poland
We provide micron-scale angle-resolved photoelectron spectroscopy (µ-ARPES) of the exfoliated intralayer antiferromagnet (AFM) MnPS3 above and below the Néel temperature in comparison with density functional theory (DFT) calculations. We demonstrate a splitting of parts of the Mn 3dz2-bands induced by the AFM ordering in line with DFT results. Related changes of adjacent S 3p-bands indicate a competing FM superexchange contribution. This novel access to the electronic band structure is found to be transferable to other AFM MPX3 materials (M: transition metal, P: phosphorus, X: chalcogenide).