【摘要】 在晶体中能产生光散射作用的光学振动模式的波矢对应于Brillouin区的Γ点附近。本文用本征函数法求出三角晶系空间群Γ点的不可约基矢和不可约表示的特征标,找出相应的红外、喇曼光学效应相应的特征标,最后给出三角晶系光学振动模式的分类。更多还原

【Abstract】 The wave vector of optical vibrational modes in crystal corresponds to point Γ in the Brillouin Zone. Using eigenfuction method in the paper the characteristics of the irrepe sentations and irrepesentations basis vectors have been given for point Γ of space groupsin trigonal system. Classifications of vibrational modes in trigonal system have been driven.更多还原