Dual control of spin-electromagnetic wave chaos in active ring oscillators based on artificial multiferroics

[摘要] Properties of spin-electromagnetic wave chaos developed in active ring oscillators have been investigated. A multiferroic structure composed of yttrium iron garnet film and barium strontium titanate (BST) slab served as a nonlinear dispersive medium of the oscillator. Dual control of the fractal dimension of the chaotic signal attractor was realized by variation of the ring gain and dielectric permittivity of the BST slab.

[发布机构] St. Petersburg Electrotechnical University, St. Petersburg; 197376, Russia^1;ITMO University, St. Petersburg; 197101, Russia^2;Lappeenranta University of Technology, Lappeenranta; 53850, Finland^3

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Chaotic signal;Dielectric permittivities;Dual control;Multiferroics;Nonlinear dispersive medium;Ring oscillator;Yttrium iron garnet films