NONSINGULAR SKYRMIONS FOR LANDAU-LEVELS WITH ODD OCCUPATION NUMBER INA 2-DIMENSIONAL SYSTEM

The number of particles, energy and other physical parameters in the p resence of a skyrmion vortex have been calculated using the gradient e xpansion technique. Unlike other researchers, we have not used the app roximation of functions projected on a single Landau level. If other L andau levels are included in the scheme, we have a simple physical mod el and a substantially modified expression for the skyrmion energy. Ge neration of one skyrmion is thermodynamically favorable, so they shoul d emerge spontaneously near odd-integer filling factors. (C) 1997 Amer ican Institute of Physics.