Chaudhury, R.; Paul, S. K. - In: The European Physical Journal B - Condensed Matter and … 76 (2010) 3, pp. 391-398
The physical spin configurations corresponding to the topological excitations expected to be present in the XY limit of a purely quantum spin <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$\frac {1}{2}$</EquationSource> </InlineEquation> Heisenberg ferromagnet, are investigated on a two dimensional square lattice. Quantum vortices (anti-vortices) are constructed by making...</equationsource></inlineequation>