Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
2 PublicationsPattern recognition in reciprocal space with a magnon-scattering reservoir
Körber, L.; Heins, C.; Hula, T.; Kim, J.-V.; Thlang, S.; Schultheiß, H.; Faßbender, J.; Schultheiß, K.
Magnons are elementary excitations in magnetic materials and undergo nonlinear multimode scattering processes at large input powers. In experiments and simulations, we show that the interaction between magnon modes of a confined magnetic vortex can be harnessed for pattern recognition. We study the magnetic response to signals comprising sine wave pulses with frequencies corresponding to radial mode excitations. Three-magnon scattering results in the excitation of different azimuthal modes, whose amplitudes depend strongly on the input sequences. We show that recognition rates above 95\% can be attained for four-symbol sequences using the scattered modes, with strong performance maintained with the presence of amplitude noise in the inputs.
Keywords: spin wave; magnon; vortex; Brillouin-light scattering; BLS; reservoir computing; neuromorphic computing; nonlinear; three-magnon scattering; micromagnetic simulations
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Data publication: Pattern recognition in reciprocal space with a …
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Data publication: Pattern recognition in reciprocal space with a …
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Nature Communications 14(2023), 3954
DOI: 10.1038/s41467-023-39452-y
Cited 7 times in Scopus -
Lecture (others)
Kolloquium der TU München (vorgetragen von Dr. H. Schultheiss), 09.02.2023, München, Deutschland
Permalink: https://www.hzdr.de/publications/Publ-34945