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Solitons in the domain structure of a two-axis ferromagnet

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  • Kiselev, V.V.
  • Raskovalov, A.A.

Abstract

We have found and investigated new solutions of the initial-boundary problem for the Landau–Lifshitz equation on the basis of the Riemann problem on a torus. They describe solitons and dispersive waves in the physically selected domain structure of a two-axis ferromagnet. We have shown, that even against a stronlgy nonlinear inhomogeneous ground state of the medium a spectral representation of the integrals of motion for arbitrary localized distribution of magnetization in the domain structure is written as a sum of independent solitons and spin waves contributions. Solitons in the domain structure are expressed in terms of the elliptic functions. Analysis of the essentially nonlinear dynamics of spin waves and their interaction with the solitons and domain structure reduces to solving linear integral equations on a torus.

Suggested Citation

  • Kiselev, V.V. & Raskovalov, A.A., 2020. "Solitons in the domain structure of a two-axis ferromagnet," Chaos, Solitons & Fractals, Elsevier, vol. 135(C).
    • Handle: RePEc:eee:chsofr:v:135:y:2020:i:c:s0960077920301934
    DOI: 10.1016/j.chaos.2020.109803
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    1. Kiselev, V.V. & Raskovalov, A.A., 2019. "Solitons in the stripe domain structure of an easy-axis ferromagnet," Chaos, Solitons & Fractals, Elsevier, vol. 127(C), pages 302-311.
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