SKM 2021 – scientific programme

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MA: Fachverband Magnetismus

MA 18: Posters Magnetism V

MA 18.19: Poster

Friday, October 1, 2021, 10:00–13:00, P

Microfocused optical spin-wave spectroscopy with vector magnetic fields — •Yannik Kunz, Michael Schneider, Björn Heinz, Lars Niklas Heß, Philipp Pirro, Vitaliy Vasyuchka, and Mathias Weiler — Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany

The field of magnonics aims to exploit spin waves for information processing purposes. Experimental techniques that allow accurate spin-wave spectroscopy in magnonic microstructures are needed to tailor magnonic devices. The micro-focused frequency-resolved magneto-optic Kerr effect (FR-MOKE) can be used for spatially resolved spin-wave measurements in the frequency-domain with phase resolution, empowered by vector network analysis [1]. Here we present a FR-MOKE setup that provides 3D vector magnetic fields to study linear and non-linear spin-wave dynamics in micropatterned magnonic conduits in all field geometries. The setup allows simultaneous integration of micro-focused Brillouin Light Scattering and time-resolved MOKE to access both coherent and incoherent spin-wave dynamics as a function of frequency and/or time. We characterize the setup performance through optical spin-wave spectroscopy measurements of metallic and insulating magnonic devices. [1] L. Liensberger et al. IEEE Magn. Lett. 10, 5503905 (2019)