Dresden 2026 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 25: Focus Session: Young Semiconductor Forum
HL 25.2: Hauptvortrag
Mittwoch, 11. März 2026, 10:00–10:30, POT/0251
Optical readout of reconfigurable in-plane magnetic domains in CrSBr — •Aleksandra Łopion1, Pierre-Maurice Piel1, Manuel Terbeck1, Jan-Hendrik Larusch1, Jakob Henz1, Marie-Christin Heißenbüttel2, Thorsten Deilmann2, Michael Rohlfing2, Zdenek Sofer3, and Ursula Wurstbauer1 — 1Physikalisches Institut and Center for Soft Nanoscience (SoN), University of Münster, Wilhelm Klemm Str. 10, Münster, 48149, Germany — 2Institut für Festkörpertheorie, University of Münster, Wilhelm Klemm Str. 10, Münster, 48149, Germany — 3Department of Inorganic Chemistry, University of Chemistry and Technology, Prague Technická 5, Prague, 616628, Czech Republic
Two-dimensional van der Waals (vdW) magnets have overcome the Mermin-Wagner expectation by hosting long-range order while remaining tunable through stacking, strain, gating, and external fields. Their reconfigurability and hysteresis are attractive for information technologies, particularly when antiferromagnetic (AFM) multistability is accessed and read optically. We discover a reconfigurable multilayer magnetic domain structure in the A-type antiferromagnetic semiconductor. The layered out-of-plane domain structure can be tuned by external stimuli and read out via domain-modulated optical contrast. This coupled magnetic-optical functionality demonstrates the possibility of encoding, processing, and storage of information in magnetic textures with a photonic-compatible readout. The domain landscape highlights CrSBr as a platform for "intelligent matter" and a building block for ultracompact opto-spintronic memories and neuromorphic hardware.
Keywords: van der Waals magnets; CrSBr; metastable magnetic states; adaptive layered magnetic domains; optical readout