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Bistable Magnetization Profiles in Magnetic Thin Films Driven in the Allowed Band
Khomeriki R., Leon J., Manna M.A.
Physical Review B 74 (2006) 094414 - http://hal.in2p3.fr/in2p3-00149190
Science non linéaire/Formation de Structures et Solitons
Bistable Magnetization Profiles in Magnetic Thin Films Driven in the Allowed Band
R. Khomeriki, J. Leon1, M. A. Manna1
1 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
http://www.lpta.in2p3.fr/
CNRS : UMR5207 – IN2P3 – Université Montpellier II - Sciences et techniques
Bât 13- 1er Et. - CC 070 Place Eugène Bataillon 34095 MONTPELLIER CEDEX 5
France
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.

Articles dans des revues avec comité de lecture
2006
Physical Review B
74
094414

42.65.Wi, 05.45.-a
yttrium compounds – garnets – magnetic thin films – magnetisation – phonons – Schrodinger equation