单壁BC_3纳米管拉曼活性模振动频率的家庭模式  

Family Behaviour of Raman Active Phonon Frequencies of BC_3 Single-wall Nanotubes

作　　者：王翬[1] 王玉芳[1] 冯敏[1] 曹学伟[1] 金庆华[1] 丁大同[1] 蓝国祥[1] 

机构地区：[1]南开大学物理科学学院,天津300071

出　　处：《光散射学报》2008年第2期97-101,共5页The Journal of Light Scattering

摘　　要：本文对单壁BC3纳米管的振动模式进行了对称性分析,利用对称性适配力常数模型计算了直径在0.7-2.5 nm范围单壁BC3纳米管布里渊区Γ点的声子频率。发现当n＋m等于常数时,拉曼活性振动模表现出明显的家庭模式。Using symmetry-adapted force-constant lattice-dynamical method, the Raman active phonon frequencies are calculated for BC3 single-wall nanotubes with diameter between 0.7 nm and 2.5 nm. The n ＋ rn = constant family behaviour is found in most branches. For a particular family, the frequency of phonons at Г point changes regularly according to the chiral angle. Therefore, we may distinguish single-wall nanotubes with similar diameter and different chiral angle.

关 键 词：单壁BC3纳米管 声子 家庭模式 

分 类 号：O657.37[理学—分析化学]