Local modes and scattering of spin waves by a soliton in an isotropic 2D ferromagnet
Ivanov B. A.
A Belavin-Polyakov soliton in an isotropic 2D ferromagnet with a topological charge ν has 2\v\ local magnon modes of zero frequency. These modes are the limiting points of partial cylindrical waves with an azimuthal number — | v\<m^ | v\ in the limit k—>0. © 1995 American Institute of Physics.