Parametric generation of soliton-like spin wave pulses in ferromagnetic thin-film ring resonators

Intense soliton-like spin wave pulses were parametrically generated in ferromagnetic thin-film ring resonators under the action of periodic parallel magnetic pulse pumping. Various types of nonlinear pulse sequences were observed depending on the pump pulse repetition period and the position of the pulse carrier frequency with respect to the ring resonator frequency spectrum. A theoretical model is suggested and calculations are performed that give a detailed explanation of the observed phenomena.