SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 46: Ultrafast Magnetization Effects II
MA 46.13: Vortrag
Freitag, 31. März 2023, 12:30–12:45, HSZ 02
Ultrafast energy flow in the van der Waals ferromagnet Fe3GeTe2 (FGT) — •Yoav William Windsor1,2, Daniela Zahn2, Victoria C. A. Taylor2, Theodor Griepe4, Tommaso Pincelli2, Hyein Jung2, Sang-Eun Lee2, Christian Schüßler-Langeheine3, Niko Pontius3, Unai Atxitia4, Ralph Ernstorfer1,2, and Laurenz Rettig2 — 1TU Berlin — 2Fritz Haber Inst. — 3Helmholz Zentrum Berlin — 4CSIC Madrid
Van der Waals bonded magnetic materials expand the technological promise of 2D materials (TMDCs, Graphene) into the field of spintronics. To this end, understanding their nonequilibrium behavior is essential. Here we experimentally probed the response of FGT to photoexcitation using three probes: time-resolved ARPES (probes the carriers), time-resolved XMCD (probes the spins), and femtosecond electron diffraction (FED; probes the lattice). We resolve sub-picosecond responses in all three sub-systems, and find that the conventional M3TM model must be modified to reliably reproduce the combined response of all three sub-systems together.