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05 November 2024
 
  » arxiv » arxiv.0704.0024

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Formation of quasi-solitons in transverse confined ferromagnetic film media
A.A. Serga ; M. Kostylev ; B. Hillebrands ;
Date 31 Mar 2007
Subject nlin.PS (Pattern Formation and Solitons)
AbstractThe formation of quasi-2D spin-wave waveforms in longitudinally magnetized stripes of ferrimagnetic film was observed by using time- and space-resolved Brillouin light scattering technique. In the linear regime it was found that the confinement decreases the amplitude of dynamic magnetization near the lateral stripe edges. Thus, the so-called effective dipolar pinning of dynamic magnetization takes place at the edges.
In the nonlinear regime a new stable spin wave packet propagating along a waveguide structure, for which both transversal instability and interaction with the side walls of the waveguide are important was observed. The experiments and a numerical simulation of the pulse evolution show that the shape of the formed waveforms and their behavior are strongly influenced by the confinement.
Source arXiv, arxiv.0704.0024
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