Self-Generation of Fundamental Dark Solitons in Magnetic Films

Abstract

The self-generation of single, fundamental, stable, spin-wave-envelope black and gray dark solitons has been realized for the first time. These solitons were generated from microwave magnetostatic surface waves (MSSWs) propagated in an in-plane magnetized yttrium iron garnet film MSSW delay line in a resonant ring. These fundamental dark solitons were made possible by a new and general filtering technique for a high gain nonlinear resonant ring. The amplitude and phase profiles together with the power spectra of the self-generated microwave pulses confirm their fundamental dark soliton nature.

Recent advances in processing and applications of microwave ferrites

“…In recent years, ferrite film-based active feedback rings have shown great promise for high-frequency applications [125][126][127][128]. Fig.…”

Stationary solutions of the one-dimensional nonlinear Schrödinger equation. I. Case of repulsive nonlinearity

“…The NLSE is ubiquitous. It describes wave propagation phenomena in many systems besides the BEC, including optical pulses in fibers 4 , helical excitations of a vortex line 5 , Bose-condensed photons 7 , and magnetic films 6 . It is one of a few basic equations upon which the modern theory of integrable nonlinear systems has been founded 8,9 .…”

Tunable tunneling: An application of stationary states of Bose-Einstein condensates in traps of finite depth

“…The NLS models many other natural phenomena as well, including spin waves in magnetic materials [15], Bose-condensed photons [16], disordered media [17], helical excitations of a vortex line [18], and light pulses in optical fibers [19]. However, as BEC's are trapped, an extra potential term is required.…”