Nonlinear localized magnetization wave of a ferromagnet as a bound state of a large number of magnons
Kosevich A.M. , Ivanov B.A. , Kovalev A.S.
A new type of localized two-parameter solutions of the one-dimensional dynamic equations for the magnetization in a ferromagnet is obtained. The energy Ε of the nonlinear wave is calculated as a function of its momentum Ρ and of the number of bound magnons in the wave. A formally periodic dependence of Ε on Ρ having the meaning of the dispersion law for a magnetic solition, is observed.