Effect of intertube coupling on the electronic structure of carbon nanotube ropes

被引：152

作者：

Kwon, YK ^{[1
]}

Saito, S

Tomanek, D

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Michigan State Univ, Funct Mat Res Ctr, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.58.R13314

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate the structural and electronic properties of an ordered "bundle" of (10,10) carbon nanotubes. Our results indicate that intertube coupling causes an additional band dispersion of less than or similar to 0.2 eV and opens up a pseudogap of the same magnitude at E-F. Soft librations at nu approximate to 12 cm(-1) are predicted to occur below the orientational melting temperature which marks the onset of tube rotations about their axis. Whereas the density of states near E-F increases by 7% due to intertube coupling and by one order of magnitude due to K doping in KC8, these states do not couple to tube librations. [S0163-1829(98)52340-5].

引用

页码：13314 / 13317

页数：4

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