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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.16: Poster
Thursday, March 21, 2024, 15:00–18:00, Poster C
Cavity-based excitation of Magnetization dynamics in a skyrmion host material — •Philipp Schwenke1, Lars Heß1, Ephraim Spindler1, Aisha Aqeel2, Vitaliy Vasyuchka1, Christian Back2, and Mathias Weiler1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — 2Physik-Department, Technische Universität München, 85748 Garching, Germany
Magnetic skyrmions are vortex-like topologically protected spin textures that typically occur in chiral magnets with Dzyaloshinskii-Moriya interactions.
A prominent skyrmion host material is Cu2OSeO3. This crystal exhibits a skyrmion lattice phase near the Curie temperature [1] and a second skyrmion phase at low temperatures [2].
In addition, it has recently been shown that a heterostructure of this chiral magnet with a ferromagnet exhibits hybrid modes in its ferromagnetic resonance spectra [3].
We study magnetization dynamics in a Cu2OSeO3 crystal placed in a custom-designed loop-gap microwave cavity and compare the coupling of cavity photons to magnons in Cu2OSeO3 to the corresponding coupling between magnons in a Y3Fe5O12 sphere and the same cavity.
[1] A. Aqeel et. al, Phys. Rev. B 103, L100410 (2021)
[2] A. Chacon et. al, Nature Phys 14, 936-941 (2018)
[3] C. Lüthi et. al, Appl. Phys. Lett. 122, 012401 (2023)
Keywords: Skyrmions; Magnetization dynamics; Chiral Magnets