摘要
采用双子格模型和相干态表示，考虑磁－声子耦合作用和磁子间的相互作用，研究了具有最近邻和次近邻相互作用的一维反铁磁分子晶体ＣｕＣｌ２·２Ｎ（Ｃ５Ｄ５）的非线性集体激发特性，分析了孤子的峰值、宽度、能量和有效质量的特点，结果表明ＣｕＣｌ２·２Ｎ（Ｃ５Ｄ５）中出现孤子激发是可能的。
By considering magnon-phonon coupling and magnon-magnon interactions and employing the double-sublattice mode and coherent state ansatz, we study the properties of a nonlinear collertive excitation in an S=12 one-dimensional antiferromagnet CuCl 2·2N(C 5D 5) with nearest-neighbor exchange and next-nearest-neighbor exchange along the chain. The soliton peak, width, rest energy and effective mass are given. These results show that solitary excitation are possible in this system.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
1999年第1期99-105,共7页
Journal of Atomic and Molecular Physics
关键词
反铁磁
分子晶体
CPC
双子格模型
孤子激发
AFM CuCl 2·2N(C 5D 5) Double-sublattice mode Klein-Gordon equation Solitary excitation
