Nonlinear signal processing with magnonic superlattice with two periods

Autor:	M. A. Morozova, O. V. Matveev, Yu. P. Sharaevskii, S. A. Nikitov, A. V. Sadovnikov
Rok vydání:	2022
Předmět:	Condensed Matter::Materials Science Physics and Astronomy (miscellaneous) Physics::Optics Condensed Matter::Strongly Correlated Electrons
Zdroj:	Applied Physics Letters. 120:122407
ISSN:	1077-3118 0003-6951
DOI:	10.1063/5.0083133
Popis:	In this work, we provide investigations of nonlinear spin wave propagation in magnonic superlattice. Magnonic superlattice is a ferromagnetic film loaded on a dielectric ceramic substrate with the copper grating with two periods. It is shown that a superlattice with two periods allows the formation of narrower bandgaps as compared to magnonic crystal with one period. Nonlinear effects, such as the generation of spin wave excitations at half-frequency, caused by first-order parametric processes, and a nonlinear shift of the bandgap, caused by a change in the longitudinal component of magnetization with an increase in the input signal power, are revealed. For the experimental study, the Brillouin light scattering spectroscopy was used, and the theoretical model was built using the transfer matrix method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ad6c022d4632440a57571766f1e4c9dc https://doi.org/10.1063/5.0083133 Zobrazit plný text záznamu