Resonant generation of propagating second-harmonic spin waves in nano-waveguides.

Autor: Nikolaev KO; Institute of Applied Physics, University of Muenster, 48149, Muenster, Germany., Lake SR; Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06120, Halle, Germany., Schmidt G; Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06120, Halle, Germany.; Interdisziplinäres Zentrum für Materialwissenschaften, Martin-Luther-Universität Halle-Wittenberg, 06120, Halle, Germany., Demokritov SO; Institute of Applied Physics, University of Muenster, 48149, Muenster, Germany. demokrit@uni-muenster.de., Demidov VE; Institute of Applied Physics, University of Muenster, 48149, Muenster, Germany.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Feb 28; Vol. 15 (1), pp. 1827. Date of Electronic Publication: 2024 Feb 28.
DOI: 10.1038/s41467-024-46108-y
Abstrakt: Generation of second-harmonic waves is one of the universal nonlinear phenomena that have found numerous technical applications in many modern technologies, in particular, in photonics. This phenomenon also has great potential in the field of magnonics, which considers the use of spin waves in magnetic nanostructures to implement wave-based signal processing and computing. However, due to the strong frequency dependence of the phase velocity of spin waves, resonant phase-matched generation of second-harmonic spin waves has not yet been achieved in practice. Here, we show experimentally that such a process can be realized using a combination of different modes of nano-sized spin-wave waveguides based on low-damping magnetic insulators. We demonstrate that our approach enables efficient spatially-extended energy transfer between interacting waves, which can be controlled by the intensity of the initial wave and the static magnetic field.
(© 2024. The Author(s).)
Databáze: MEDLINE
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