具有反铁磁相互作用的双铁磁链中的非线性激发

Nonlinear excitation in two ferromagnetic chains with antiferromagnetic interaction

采用双子格模型和相干态表示,研究了链与链之间存在反铁磁相互作用的双铁磁链系统中的非线性激发的性质,得到了孤子的宽度,能量及有效质量。

Employing the double sublattice mode and the coherent state ansatz, we study the properties of a nonlinear excitation in two ferromagnetic chains with antiferromagmetic interaction. The width, the energy and the effective mass of the soliton are given. These result show that it is possible to excite nontopological soliton or non topological reversed soliton or topological soliton or topological reversed soliton in this system under the condition of the different anisotropy.