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Soliton spin excitations in a Heisenberg helimagnet

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  • Daniel, M.
  • Beula, J.

Abstract

We propose a new model for a helimagnet in analogy with the cholesteric liquid crystal and investigate its non-linear spin dynamics in the semi-classical limit. The study reveals that for specific parametric choices, the elementary spin excitations along the helical axis are governed by soliton modes. A multiple scale perturbation analysis on the more general non-integrable case shows that the helicity does not alter the velocity and amplitude of the soliton, but introduces some fluctuations in the localised region of the soliton.

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  • Daniel, M. & Beula, J., 2009. "Soliton spin excitations in a Heisenberg helimagnet," Chaos, Solitons & Fractals, Elsevier, vol. 41(4), pages 1842-1848.
    • Handle: RePEc:eee:chsofr:v:41:y:2009:i:4:p:1842-1848
    DOI: 10.1016/j.chaos.2008.07.033
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    References listed on IDEAS

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    1. Daniel, M. & Latha, M.M., 2001. "A generalized Davydov soliton model for energy transfer in alpha helical proteins," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 298(3), pages 351-370.
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    Cited by:

    1. Li, Min & Wang, Boting & Xu, Tao & Wang, Lei, 2021. "Quantitative analysis on the bifurcations and exact travelling wave solutions of a generalized fourth-order dispersive nonlinear Schrödinger equation in Heisenberg spin chain," Chaos, Solitons & Fractals, Elsevier, vol. 145(C).

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