Nonlinear spin-wave scattering in a micro-structured magnonic crystal

Autor: Obry, B., Meyer, T., Pirro, P., Brächer, T., Osten, J., Chumak, A. V., Serga, A. A., Fassbender, J., Hillebrands, B.
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: DPG-Frühjahrstagung der Sektion Kondensierte Materie, 30.03.-04.04.2014, Dresden, Deutschland
Popis: We study the nonlinear multi-magnon processes in a micro-structured magnonic crystal consisting of a Ni81Fe19 waveguide, which has been periodically modulated in its saturation magnetization by localized ion implantation. A significant modification of the nonlinear magnon spectrum compared to a reference waveguide is determined, exhibiting a predominant scattering into modes with a frequency at the magnonic band gaps and an enhancement of the nonlinearities for some excitation frequencies. The results prove the feasibility to utilize nonlinear multi-magnon scattering for magnon spintronic applications on the micrometer scale.
Databáze: OpenAIRE