Regensburg 2019 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 8: Magnonics

MA 8.13: Vortrag

Montag, 1. April 2019, 18:15–18:30, H52

Control and stimulation of three-magnon scattering in a magnetic vortex — •Lukas Körber^{1, 2}, Katrin Schultheiss¹, Tobias Hula^{1, 3}, Roman Verba⁴, Toni Hache¹, and Helmut Schultheiss^{1, 2} — ¹Helmholtz-Zentrum Dresden - Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstraße 400, 01328 Dresden, Germany — ²Technische Universität Dresden, 01062 Dresden, Germany — ³Technische Universität Chemnitz, 09111 Chemnitz, Germany — ⁴Institute of Magnetism, National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine

When applying a large enough RF field amplitude, spin waves in a magnetic vortex disk can be forced to decay into two other spin waves via three-magnon scattering. These scattering processes obey certain selection rules. Here, we show that three-magnon scattering in such a system can be stimulated below the usual instability threshold. We further present how this may be integrated into magnonic conduits by coupling the vortex to a adjacent magnon waveguide. The authors acknowledge financial support from the Deutsche Forschungsgemeinschaft within programme SCHU 2922/1-1.