Low-frequency Raman modes in Cs- and Rb-doped single wall carbon nanotubes

被引：48

作者：

Bendiab, N

Righi, A

Anglaret, E ^{[1
]}

Sauvajol, JL

Duclaux, L

Béguin, F

机构：

[1] Univ Montpellier 2, UMR CNRS 5581, Dynam Phases Condensees Grp, F-34095 Montpellier 5, France

[2] Ctr Rech Mat Divisee, CNRS, F-45071 Orleans 2, France

来源：

CHEMICAL PHYSICS LETTERS | 2001年 / 339卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(01)00351-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single wall carbon nanotubes (SWNT) doped at saturation by alkali-metals are investigated by Raman scattering The Raman profiles in the frequency range of the tangential modes (TM) are close for Cs and Rb doping and only weakly dependent on the laser energy. This loss of resonance is assigned to a loss of Van Hove singularities in the electronic density of states. The most striking intrinsic features of the doped compounds are two low-frequency peaks assigned to modes involving both radial motions of tubes and alkali-atoms vibrations. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：305 / 310

页数：6

共 22 条

[1] Resonant Raman study of the structure and electronic properties of single-wall carbon nanotubes [J].