Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 15: Poster I
MA 15.2: Poster
Dienstag, 18. März 2025, 10:00–12:30, P1
Polymer-free stacking and µ-ARPES of multiferroic CuCrP2S6 — •Niklas Leuth1, Tim Jacobs1, Jeff Strasdas1, Wendong Wang2, Roman Gorbachev2, Elena Voloshina3, Yuriy Dedkov3, Marcus Liebmann1, Vitaly Feyer4, and Markus Morgenstern1 — 1II. Institute of Physics B, RWTH-Aachen University, Germany — 2National Graphene Institute, University of Manchester, UK — 3Department of Physics, Shanghai University, China — 4PGI 6, Forschungszentrum Jülich, Germany
Transition-metal (Tm) phosphorus trisulfides are antiferromagnetic van-der-Waals materials with various magnetic orders, providing a platform for detailed studying and tuning of 2D magnetism [1,2]. The binary Tm compound CuCrP2S6 exhibits additional ferro-/ antiferroelectricity and magnetoelectric coupling enabling gate induced magnetic orders [2]. We present results on stacking of this material by a fully inorganic transfer process in a glovebox developed by the University of Manchester, leading to polymer-free inter- and surfaces [3]. These stacks are analysed by atomic force microscopy and x-ray photoelectron spectroscopy. After transfer in ultra-high vacuum, they are suitable for surface-sensitive angular-resolved photoelectron spectroscopy (ARPES) with micrometre focus. We tracked the band structure from 300 K to 40 K covering several known phase transitions and discuss changes of the band structure in comparison with density functional theory calculations and analyse the relevant photoelectron matrix elements. [1] J. Mater. Chem. A, 2021, 9, 2560-2591. [2] Nat. Comm., 2024, 15, 3029. [3] Nat. Electron., 2023, 6, 981-990.
Keywords: ARPES; Polymer-free stacking; CuCrP2S6; multiferroic