Nguenang Jean-Pierre, Kenfack Aurelien Jiotsa, Kofané Timoléon Créprin
Laboratoire de Mécanique, Faculté des Sciences, Université de Yaoundé I, B.P. 812, Yaoundé, Cameroon.
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Nov;66(5 Pt 2):056613. doi: 10.1103/PhysRevE.66.056613. Epub 2002 Nov 26.
The contributions of dipole-dipole interactions to the dynamics of solitons on a one-dimensional discrete easy-plane Heisenberg ferromagnet, in which the biquadratic exchange interactions are taken into account in addition to the Zeeman energy, the uniaxial anisotropy, and the exchange energy, are studied numerically. The results of a numerical simulation of the dynamics of a single soliton, as well as collision between a soliton-antisoliton pair, indicated that the energy-velocity curves for the solitons in the ferromagnetic chain present the signature of five different branches corresponding to different types of nonlinear elementary excitations in the chain.
研究了在一维离散易平面海森堡铁磁体中，除了塞曼能、单轴各向异性和交换能之外还考虑了双二次交换相互作用时，偶极-偶极相互作用对孤子动力学的贡献。单个孤子动力学以及孤子-反孤子对碰撞的数值模拟结果表明，铁磁链中孤子的能量-速度曲线呈现出五个不同分支的特征，这五个分支对应于链中不同类型的非线性元激发。
