单壁碳纳米管手性角对声子振动频率的影响  

Effect of single-wall carbon nonotubes' chiral anglefor the phonon frequency

作　　者：张慧鹏[1] 金庆华[1] 王玉芳[1] 李宝会[1] 丁大同[1] 

机构地区：[1]南开大学物理系,天津300071

出　　处：《物理学报》2005年第9期4279-4284,共6页Acta Physica Sinica

摘　　要：报道了用卷曲法对一系列手性单壁碳纳米管计及卷曲效应声子振动谱的计算结果.基于实际的数值计算,讨论了Brillouin区中心Γ点手性管晶格振动模的分类;得出了其12个非简并的本征频率与手性和管径的关系.The phonon frequencies at the center of Brillouin zone in a series of ehiral single-wall carbon nanotubes were calculated numerically, in which the curvature effect was treated appropriately. According to the numerical results, the classification of the vibration modes for ehiral tubes at the center of Brillouin zone were analysed. The relations between frequeney-ehirality and frequency-tube diameter for 12 non-degenerate vibration modes Were illustrated.

关 键 词：单壁碳纳米管 手性管 振动模式 振动频率 声子 晶格振动模 数值计算 计算结果 本征频率 振动谱 

分 类 号：TB383[一般工业技术—材料科学与工程]