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arXiv · 0704.0024

Formation of quasi-solitons in transverse confined ferromagnetic film media

A. A. Serga·M. Kostylev·B. Hillebrands
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Abstract

The 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.

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A. A. Serga, M. Kostylev, B. Hillebrands. 2007-03-31. Formation of quasi-solitons in transverse confined ferromagnetic film media. https://arxiv.org/abs/0704.0024

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