摘要
在自由边界条件和驻波边界条件下 ,讨论分析了一维双原子链晶格振动的振动模和色散关系 ,并与周期性边界条件下的结果进行了比较 ;明确了在不同边界条件下讨论实际原子链晶格振动的振动模和色散关系 ,其结果是相同的 .
The lattice vibration of one dimensional diatomic chain is analyzed under the free boundary condition and the stationary wave boundary condition.The vibrational mode and dispersion relation are the same with those under the periodic boundary condition.In conclusion,the results of lattice vibration under the periodic boundary condition are also true for other boundary conditions.
出处
《大学物理》
北大核心
2003年第2期7-10,30,共5页
College Physics
基金
教育部高等学校骨干教师资助计划项目
