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DY: Fachverband Dynamik und Statistische Physik
DY 22: Focus Session: Recent Progresses in Criticality in the Presence of Boundaries and Defects I (joint session DY/TT)
DY 22.9: Talk
Wednesday, March 20, 2024, 12:15–12:30, A 151
Confinement of magnetic solitons and edge states in van-der Waals FeOCl — •Angela Möller1, Martin Panthöfer1, Stefanie Berinskat1, Fabian Predelli2, and Peter Lemmens2 — 1Dept. Chemistry, JGU Mainz, Mainz, Germany — 2IPKM, TU Braunschweig, Braunschweig, Germany
In a comparative and systematic study of the isostructural van-der Waals materials ScOCl, ScOBr, FeOCl, the origin of unconventional magnetic properties of FeOCl has been investigated. Evidence for a size dependent order parameter and fluctuations are found in Mössbauer and Raman spectroscopy in conjunction with thermodynamic data and X-ray diffraction. We discuss our data in relation to soliton condensation into topological edge states.
Funding by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under the projects 443703006 (CRC 1487) and 442589410 is gratefully acknowledged. PL and FP acknowledge support by DFG GrK 1952/2, Metrology for Complex Nanosystems-NanoMet and DFG EXC-2123 QuantumFrontiers - Light and Matter 390837967.