SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 34: Focus Session: Spin-Phonon Coupling
MA 34.6: Vortrag
Donnerstag, 30. März 2023, 12:15–12:30, HSZ 02
Magnon-phonon coupling in polycrystalline metallic thin films — •Manuel Müller1,2, Johannes Weber1,2, Fabian Engelhardt3,4,5, Victor A. S. V. Bittencourt3,6, Thomas Luschmann1,2,7, Silvia Viola Kusminskiy5,3, Stephan Geprägs1, Rudolf Gross1,2,7, Matthias Althammer1,2, and Hans Huebl1,2,7 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2TUM School of Natural Sciences, Technische Universität München, Garching, Germany — 3Max Planck Institute for the Science of Light, Erlangen, Germany — 4Department of Physics, University Erlangen-Nuremberg, Erlangen, Germany — 5Institute for Theoretical Solid State Physics, RWTH Aachen University, Aachen, Germany — 6ISIS (UMR 7006), Université de Strasbourg, 67000 Strasbourg, France — 7Munich Center for Quantum Science and Technology (MCQST), Munich, Germany
Magnetoelastic coupling between wave-like excitations of the spin system (spin waves) and the lattice (elastic waves) can result in a hybridization of both modes. This is of interest for future applications, such as microwave-to-optics transducers and phononic spin valve devices. As a finite magnetoelastic coupling affects the magnetization dynamics of the magnetic layer, it can be characterized with high sensitivity using ferromagnetic resonance spectroscopy. By using broadband ferromagnetic resonance spectroscopy, we have studied study the magnetoelastic coupling between silicon and sapphire substrates and ferromagnetic thin films deposited on them via DC sputtering.