ON STATIONARY TOPOLOGICAL SOLITONS IN A 2-DIMENSIONAL ANISOTROPIC HEISENBERG-MODEL

We study stationary two-dimensional solitons in an easy-axis Heisenberg magnet with the Hamiltonian density[Figure not available: see fulltext.] where i=1, 2, a=1, 2, 3, and θ(xi) is the angle between unit vector s(xi) and the 'easy' axis, 0<p<∞. Stable solitons with a topological charge Q=1 and localized distributions sa(xi) with Q=2 are found. The existence of the bound states of two solitons with Q=1 is shown numerically for 0<p<∞. © 1990 Kluwer Academic Publishers.