扶手型碳纳米管环结构模型与电子结构的研究  

The Model and the Electronic Structure of Armchair Toroidal Carbon Nanotubes

作　　者：邓元祥[1] 施毅敏[1] 肖发新[1] 

机构地区：[1]湖南工学院,421008

出　　处：《中国科技信息》2006年第9期294-295,共2页China Science and Technology Information

摘　　要：基于石墨平面单电子轨道紧束缚近似,构造了扶手型碳纳米管环结构模型,考虑其卷曲效应,导出了其相应的矩阵元,研究了其电子结构性质。结果表明扶手型碳纳米管环的能谱结构与环的直径有关。此外,最高占有态与最低空态间的能隙与环直径以及碳管半径均有关。Based on single-orbital tight-binding approximation for a graphite sheet,the model of armchair toroidal carbon nantrbes（ATCNTs）is constructed.Taken into account the curvature and strain effects,the in teraction matrix has been derived.Then we study the electronic structure of ATCNTs.The results show that ATCNTs＇energy band structure is relation to torus diameter.Moreover,the energy gap between the highest occupy states and the lowest empty states correlates with the torus diameter and the radius of tubes.

关 键 词：扶手型碳纳米管环 电子结构 

分 类 号：TB383.1[一般工业技术—材料科学与工程]