Solitons in isotropic antiferromagnets: beyond a sigma model
E.G. Galkina1,2, A.Yu. Galkin3,1, and B.A. Ivanov1,4
1Institute of Magnetism, Kiev 03142, Ukraine
2Institute of Physics, Kiev 03028, Ukraine
3Institute of Metal Physics, Kiev 03142, Ukraine
4National Taras Shevchenko University of Kiev, Kiev 03127, Ukraine
Received October 19, 2007
Isotropic antiferromagnets shows a reach variety of magnetic solitons with nontrivial static and dynamic properties. One-dimensional soliton elementary excitations have a periodic dispersion law. For two-dimensional case, planar antiferromagnetic vortices having nonsingular macroscopic core with the saturated magnetic moment are present. The dynamic properties of these planar antiferromagnetic vorteces are characterized by presence of a gyroforce.