Contribution of nonlinear excitations to dynamic structural factor of one-dimensional anisotropic Heisenberg ferromagnet

The aim of this work is to study the contribution of nonlinear excitations to dynamic structural factor of one-dimensional anisotropic Heisenberg ferromagnet. Therefore, we obtained the expression for structure factors S(q,w) magnets, in which occurrence of soliton mode has the bases of variety of physical reasons. Also we studied the dynamic properties of number of specific quasi-one-dimensional systems, which will be manifested in peculiarities of behavior of scattering intensity. (author)