A new class of nodal stationary states in 2D Heisenberg ferromagnet
I.G. Bostrem, A.S. Ovchinnikov
TL;DR
This paper introduces a novel class of nodal topological excitations in 2D Heisenberg ferromagnets, providing analytical and numerical insights into their properties and effects of anisotropy.
Contribution
It presents the first analytical solutions for these nodal states and explores how in-plane anisotropy influences their behavior.
Findings
Analytical solutions for isotropic case identified.
In-plane exchange anisotropy leads to solutions similar to out-of-plane solitons.
Nodal singular points are characterized in the gradient field of the azimuthal angle.
Abstract
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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Taxonomy
TopicsArctic and Antarctic ice dynamics · Nonlinear Photonic Systems · Advanced NMR Techniques and Applications