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4–7 Jun 2019
Arabella Brauneck Hotel
Europe/Berlin timezone
Abstract submission and registration open until Wednesday, 29th May.

Temporal evolution of magnon-magnon interaction in a magnetic vortex

4 Jun 2019, 17:30
20m
Arabella Brauneck Hotel

Arabella Brauneck Hotel

Münchner Str. 25 83661 Lenggries
Talk Spin wave and magnonics Spin wave and magnonics

Speaker

Mr Tobias Hula (Helmholtz-Zentrum Dresden-Rossendorf)

Description

Brillouin light scattering microscopy (TR-μBLS) measurements on a Permalloy disk magnetized in the vortex state are presented. By applying a homogenous out-of-plane AC field with sufficiently large amplitudes it is possible to drive the spin waves in the nonlinear regime and initiate three- and four-magnon scattering processes.

Time resolved µBLS is used to show that these pumping conditions cause cascades of different types of magnon-magnon interactions. It is shown, that the temporal transition of different scattering mechanisms can be tuned by the excitation frequency and amplitude.

The authors acknowledge financial support from the Deutsche Forschungsgemeinschaft within programme SCHU 2922/1-1.

Primary author

Mr Tobias Hula (Helmholtz-Zentrum Dresden-Rossendorf)

Co-authors

Dr Katrin Schultheiß (Helmholtz-Zentrum Dresden-Rossendorf) Mr Lukas Körber (Helmholtz-Zentrum Dresden-Rossendorf) Mr Toni Hache (Helmholtz-Zentrum Dresden-Rossendorf) Dr Helmut Schultheiß (Helmholtz-Zentrum Dresden-Rossendorf)

Presentation materials

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