一维单原子链中电子的运动

Electronic Motions in One-dimensional Chains

应用相干态方法讨论一维链中的电子与晶格声学振动模的非微扰作用,给出亚声速和超声速孤立子解及孤立子的形状,并指出在适当条件下可简化为Davydov 孤立子.

Non-perturbation interaction of an electron with lattice acousticmode is studied by the method of coherent state.Solutions of solitary wavetravelling with subsonic or supersonic velocity are derived,which is shown toreduce to Davydov soliton solution in the weak coupling condition.