Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 41: Poster III
MA 41.39: Poster
Donnerstag, 20. März 2025, 15:00–17:30, P3
Topological Phase Transition and Topological Protection in Van Der Waals Ferromagnet Fe3GeTe2 Thin Flake — •Sourav Chowdhury1, Michael Schneider2, Soumyaranjan Dash3, Christopher Klose2, Chithra Sharma4,5, Lisa-Marie Kern2, Tim Butcher2, Josefin Fuchs2, Santanu Pakhira6, Amir-Abbas Haghighirad6, Sujit Das7, Sanjeev Kumar3, Bastian Pfau2, and Moritz Hoesch1 — 1Deutsches Elektronen-Synchrotron, Hamburg, Germany — 2Max-Born-Institut, Berlin, Germany — 3Indian Institute of Science Education and Research, Mohali, India — 4University of Hamburg, Hamburg, Germany — 5Christian-Albrechts-University Kiel, Kiel, Germany — 6Karlsruhe Institute of Technology, Karlsruhe, Germany — 7Indian Institute of Science, Bengaluru, India
Topological spin textures in 2D van der Waals (vdW) magnets are increasingly sought for high-performance spintronic devices, presenting transformative potential for ultra-dense data storage, energy-efficient operation, and advanced data processing capabilities [1]. We image various topological spin textures within a vdW ferromagnet Fe3GeTe2 thin flake. We observed topological protection versus non-protection behavior at close-to versus well-below the ferromagnetic transition temperature. Monte-Carlo calculation suggests that the switching among distinct topological spin textures can be achieved with the interplay between the Rashba spin-orbit coupling and the uniaxial-magnetic-anisotropy. [1] K. Chang et al. Science 2016, 353, 274.
Keywords: magnetic topology; 2D van der Waal ferromagnet; Magnetic imaging