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Physical Review B 74 (2006) 094414
Bistable Magnetization Profiles in Magnetic Thin Films Driven in the Allowed Band
R. Khomeriki, J. Leon1, M. A. Manna1

A yttrium-iron-garnet magnetic thin film, driven by means of two antennas, produces a standing wave in-plane magnetization. When the driving frequency is chosen close to the upper edge of the passing band, it is shown by rigorous asymptotic multiscale analysis that the governing model for the generated backward volume waves is the defocusing nonlinear Schrödinger equation. Although being driven inside the allowed band, the nonlinear response of the system is discovered to allow for the formation of bistable magnetization profiles for a film width comparable with the wavelength of the driving radiation.
1 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
Science non linéaire/Formation de Structures et Solitons
yttrium compounds – garnets – magnetic thin films – magnetisation – phonons – Schrodinger equation