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VOLUME 76 (2002) | ISSUE 12 | PAGE 846
A new class of nodal stationary states in 2D Heisenberg ferromagnet
PACS: 12.39.Dc, 75.30.Kz
Abstract
A new class of nodal topological excitations in a 2D Heisenberg model is studied. The solutions correspond to a nodal singular point of the gradient field of the azimuthal angle. An analytical solution found for the isotropic case. An effect of in-plane exchange anisotropy is studied numerically. It results in solutions which are analogues of the conventional out-of-plane solitons in the 2D magnets.