Soliton dynamics of magnetization driven by a magnetic field in uniaxial anisotropic ferromagnet
AUTOR(ES)
Zheng, Zhong-Xi, Li, Qiu-Yan, Li, Zai-Dong, Wen, Ting-Dun
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2006-12
RESUMO
We study the nonlinear magnetic excitation in an anisotropic ferromagnet with a magnetic field. In the long wave approximation, the Landau-Lifschitz equation with easy axis anisotropy is transformed into the nonlinear Schrödinger type. By means of a straightforward Darboux transformation we obtain the one- and two-soliton solutions of uniaxial anisotropic ferromagnet. From a careful analysis for the asymptotic behavior of two-soliton solution we find that the collision between two magnetic solitons is elastic. This will be very helpful to understand the significant nature of the interactions between solitons in the future.
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