SKM 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 23: Poster Magnetism I
MA 23.11: Poster
Dienstag, 28. März 2023, 17:00–19:00, P1
Magnetization dynamics of skyrmions in thin film and bulk materials — •Philipp Schwenke1, Ephraim Spindler1, Raphael Gruber2, Vitaliy Vasyuchka1, Aisha Aqeel3, Mathias Kläui2, and Mathias Weiler1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — 2Institut für Physik, Johannes Gutenberg-Universität Mainz, 55122 Mainz, Germany — 3Physik-Department, Technische Universität München, 85748 Garching, Germany
Magnetic skyrmions are topologically protected chiral spin textures which hold a rich variety of phenomena and that can be stabilized in both bulk materials and thin films. In order to establish effiecient means to control skyrmions it is important to understand the magnetization dynamics of these magnetic textures. Therefore, we study the magnetization dynamics of a CoFeB thin film exhibiting µm sized quasi 2D skyrmions [1] and compare these to the dynamics observed in a bulk Cu2OSeO3 crystal exhibiting a skyrmion lattice phase [2] by means of broadband ferromagnetic resonance measurements at varying temperatures. Additionally, we investigate the dynamics of µm sized quasi 2D skyrmions in CoFeB-based thin film heterostructures in a Kerr-microscope while applying out-of plane rf fields. We observe a perturbation of the skyrmion lattice due to finite size oscillations which might provide a pathway for the manipulation of skyrmion lattices.
[1] J. Zázvorka et. al, Adv. Funct. Mater. 30, 2004037 (2020)
[2] A. Aqeel et. al, Phys. Rev. B 103, L100410 (2021)