【摘要】 考虑原子间长程库仑相互作用,求解了具有在位势的一维双原子链晶格振动运动方程组,得到了色散关系并作了简要讨论,发现多近邻作用下在位势对禁带宽度,频隙,高频支顶在布里渊区的位置等因素的影响具有不同于最近邻模型的新特征。更多还原

【Abstract】 On account of the long range Coulomb force between atoms,the dispersion law of a one- dimensional diatomic chain with on- site potential is analyzed,and the new characteristic of the lattice vibration induced by on- site potential and multi- neighbors interaction is discussed.更多还原