Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 39: Poster Magnetism II

MA 39.24: Poster

Mittwoch, 11. März 2026, 18:00–21:00, P2

Phonon Pumping Experiments — •Jeremias Mütschele, Luise Holder, Michaela Lammel, Richard Schlitz, and Sebastian T. B. Goennenwein — Department of Physics, University of Konstanz, Konstanz, Germany

Phonons carrying angular momentum have recently attracted significant attention in the field of spintronics, as they are considered promising candidates for information carriers that do not require electrical currents. The coupling of phonons to spin-wave excitations (magnons) opens up opportunities to manipulate them, and consequently the transmitted information, via magnon-phonon interactions. However, engineering such hybrid quasiparticles, known as magnon-phonon-polaritons, remains a major experimental challenge. To gain deeper insight into the properties of magnon-phonon-polaritons, we investigate phonon pumping from a ferromagnetic thin film into a paramagnetic bulk crystal under various geometrical configurations. We find that our approach enables the selective excitation and analysis of distinct magnon-phonon-polariton modes. This could open a pathway to tailor phonon-based information transport.

Keywords: Magnons; Phonon Pumping; YIG; bb-FMR; Magnetoelastic Coupling