Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 52: Poster Magnetism III
MA 52.11: Poster
Donnerstag, 12. März 2026, 15:00–17:00, P4
Magnetoacoustic interaction in Yttrium-Iron-Garnet / Aluminium-Scandium-Nitride heterostructures — •Kaya Gauch1, Kevin Künstle1, Yannik Kunz1, Agne Žukauskaite2,3, Stephan Barth2, and Mathias Weiler1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzisch Tech nische Universität Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — 2Fraunhoferr Institute for Electron Beam und Plasma Technology FEP, 01277 Dresden, Germany — 3Institute of Solid State Electronics, Technische Universität Dresden, 01062 Dresden, Germany
The magnetoelastic interaction between surface acoustic waves (SAWs) and spin waves (SWs) has attracted considerable attention in recent years. Magnetoelastic excitation of SWs is particularly promising in low-damping ferrimagnets such as yttrium iron garnet (YIG). Electri cal excitation of SAWs necessitates a piezoelectric layer, such as ZnO [1]. Here, we investigate magnetoelastic interactions in a heterostruc ture consisting of a YIG/GGG bilayer coated with a piezoelectric AlScN thin film. The coupling between SAWs and SWs is characterized using micro-focused Brillouin light scattering (BLS) spectroscopy and vector network analyzer (VNA) measurements. In addition, the ob served magnetoelastic interaction is benchmarked against the coupling in the more established ZnO/YIG/GGG heterostructure. [1] Ryburn et al., Phys. Rev. Appl. 23, 034062 (2025)
Keywords: Magneto-elastic coupling; YIG; AlScN; Magnon; Phonon