Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.62: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Interfacial Engineering of ultrafast dynamics in 2d ferromagnets — •Nele Stetzuhn1,2, Clemens von Korff Schmising2, Nikola Nedeljkovic1, Stefan Eisebitt2, and Kirill I. Bolotin1 — 1Freie Universität Berlin, Arnimallee 14, 14195 Berlin — 2Max-Born-Insitut, Max-Born-Straße 2A, 12489 Berlin
The clean and atomically sharp interfaces of 2d materials offer a convenient way to manipulate their properties by introducing, e.g., screening, external fields or doping. In this work, we investigate whether it is possible to influence de- and remagnetization dynamics in the 2d ferromagnet Fe3GeTe2 by varying its substrate between hBN and graphene, as well as suspending it over a cavity. Differences in recovery times of up to a factor 10 have been estimated from simulations between a supported and a suspended device. We test this theoretical prediction using time- and spatially resolved Kerr microscopy.
Keywords: 2d ferromagnets; time-resolved Kerr microscopy; magnetization dynamics; interfacial engineering