A. B. Borisov, I. G. Bostrem, A. S. Ovchinnikov, “Stable nonlinear excitations of the spiral type in 2D magnetic models”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2004, Volume 80, Issue 2,Pages <nobr>112

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CONDENSED MATTER

Stable nonlinear excitations of the spiral type in 2D magnetic models

A. B. Borisov^a, I. G. Bostrem^b, A. S. Ovchinnikov^b

^a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences
^b Ural State University

Abstract: A new class of stable topological excitations having the shape of small-amplitude spirals is considered in a 2D isotropic Heisenberg ferromagnet model. An exact solution generalizing some previous results is obtained. The main characteristics of small-amplitude spirals are determined using the conservation laws. The possibilities of experimental realization of such spiral structures are considered.

PACS: 75.10.Hk, 75.75.+a

Received: 14.05.2004