A new class of nodal stationary states in 2D Heisenberg ferromagnet

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A new class of nodal topological excitations in a two-dimensional 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 two-dimensional magnets.
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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/21049

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0303388
 http://arxiv.org/abs/cond-mat/0303388

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arXiv