van der Waals interaction in nanotube bundles:: Consequences on vibrational modes

被引：217
|
作者：
Henrard, L [1 ]
Hernández, E
Bernier, P
Rubio, A
机构：
[1] Fac Univ Notre Dame Paix, Phys Solide Lab, B-5000 Namur, Belgium
[2] Univ Montpellier 2, Dynam Phases Condensees Grp, F-34095 Montpellier, France
[3] Univ Sussex, Sch Chem Phys & Environm Sci, Brighton BN1 9QJ, E Sussex, England
[4] Univ Valladolid, Dept Fis Teor, E-47011 Valladolid, Spain
来源：
PHYSICAL REVIEW B | 1999年 / 60卷 / 12期
关键词：
D O I：
10.1103/PhysRevB.60.R8521
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have developed a pair-potential approach for the evaluation of van der Waals interaction between carbon nanotubes in bundles. Starting from a continuum model, we show that the intertube modes range from 5 cm(-1) to 60 cm(-1). Using a nonorthogonal tight-binding approximation for describing the covalent intratube bonding in addition, we confirm a slight chiral dependence of the breathing mode frequency and we found that this breathing mode frequency increases by similar to 10% if the nanotube lies inside a bundle as compared to inside the isolated tube.
引用
收藏
页码：R8521 / R8524
页数：4
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