2026-08-06T19:27:22Z
https://rodare.hzdr.de/oai2d
oai:rodare.hzdr.de:365
2020-10-30T12:02:17Z
openaire_data
user-hzdr
user-rodare
true
3.1
HZDR.RODARE
10.14278/rodare.365
Körber, Lukas
0000-0001-8332-9669
Schultheiß, Katrin
0000-0002-3382-5442
Hula, Tobias
0000-0002-1811-8862
Verba, Roman
0000-0001-8811-6232
Institute of Magnetism, Kyiv 03142, Ukraine
Faßbender, Jürgen
0000-0003-3893-9630
Kakay, Attila
0000-0002-3195-219X
Schultheiß, Helmut
0000-0002-6727-5098
Nonlocal stimulation of three-magnon splitting in a magnetic vortex
Rodare
2020
spin wave
nonlinear
three-magnon splitting
stimulation
micromagnetic simulation
BLS
2020-06-11
en
https://rodare.hzdr.de/record/365
https://www.hzdr.de/publications/Publ-31137
https://arxiv.org/abs/2005.12663
https://www.hzdr.de/publications/Publ-31058
10.14278/rodare.364
https://rodare.hzdr.de/communities/hzdr
https://rodare.hzdr.de/communities/rodare
Creative Commons Attribution 4.0 International
Open Access
<p>We present a combined numerical, theoretical and experimental study on stimulated three-magnon splitting in a magnetic disk in the vortex equilibrium state. Our micromagnetic simulations and Brillouin-light-scattering results confirm that three-magnon splitting can be triggered even below threshold by exciting one of the secondary modes by magnons propagating in a waveguide next to the disk. The experiments show that stimulation is possible over an extended range of excitation powers and a wide range of frequencies around the eigenfrequencies of the secondary modes. Rate-equation calculations predict an instantaneous response to stimulation and the possibility to prematurely trigger three-magnon splitting even above threshold in a sustainable manner. These predictions are confirmed experimentally using time-resolved Brillouin-light-scattering measurements and are in a good qualitative agreement with the theoretical results. We believe that the controllable mechanism of stimulated three-magnon splitting could provide a possibility to utilize magnon-based nonlinear networks as hardware for reservoir or neuromorphic computing.</p>
<p>Here, we briefly describe how the archived data for the publication "Nonlocal stimulation of three-magnon splitting in a magnetic vortex", submitted to PRL, is structured.</p>
<p>"rate-equations"<br>
- theoretical data of the temporal evolution of the spin wave modes in Fig. 4</p>
<p>"micromagnetic-simulation"<br>
- MuMax3 simulation recipes (.go files) and sample-layout masks for the<br>
simulations performed for Fig. 2(a,b,c).<br>
- corresponding power spectra obtained with our "mumax3-pwsp" program<br>
- mode profiles for stimulated and spontaneous splitting (Fig. 1(c) and Fig. 2(d))<br>
- dispersion of the spin waves, calculated by micromagetnic simulation, shown in Fig. 1(b)</p>
<p>"experiments"<br>
- electron beam microscopy image of the sample<br>
- intensity spectrum of the waveguide, used to calculate the approximate<br>
frequency/wave-vector region where the waveguide is effective (inset in Fig. 1(c))<br>
- non-time-resolved BLS measurements, including spectra, power sweeps, etc. for<br>
Figs 2,3 in "i3MS" folders, in more detail described by "i3MS_V1_KS_logbook.pdf"<br>
- time-resolved BLS measurements, further explained in the corresponding subfolders<br>
</p>