Dynamics of topological solitons in two-dimensional ferromagnets
  Dynamical topological solitons are studied in classical two-dimensional Heisenberg easy-axis ferromagnets. The properties of such solitons are treated both analytically in the continuum limit and numerically by spin dynamics simulations of the discrete system. Excitation of internal mode causes orbital motion. This is confirmed by simulations. 
Denis D. Sheka, Christian Schuster, Boris A. Ivanov, and Franz G.   Mertens