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中国物理 B 2011
Solitary excitations in one-dimensional ferromagnetic spin chains with biquadratic exchange interaction
Keywords: biquadratic exchange interaction,elliptic function wave,soliton Abstract: By using the traveling wave method, the solutions of the elliptic function wave and the solitary wave are obtained in a ferromagnetic spin chain with a biquadratic exchange interaction, a single ion anisotropic interaction and an anisotropic nearest neighbour interaction. The effects of the biquadratic exchange interaction and the single ion anisotropic interaction on the properties (width, peak and stability) of the soliton are investigated. It is also found that the effects vary with the strengths of these interactions.
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