  Physical configurations corresponding to topological excitations present in
the XY limit of a quantum spin 1/2 Heisenberg ferromagnet, are investigated on
a two dimensional square lattice. Quantum vortices(anti-vortices) are
constructed in terms of terms of coherent spin field components and the crucial
role of the associated Wess-Zumino term is highlighted. It is shown that this
term can identify a large class of vortices(anti-vortices). In particular the
excitations with odd topological charge belonging to this class, are found to
exhibit a self-similar pattern regarding the internal charge distribution. Our
formalism is distinctly different from the coventional approach for the
construction of quantum vortices(anti-vortices).
