Infrared-active phonons in carbon nanotubes

被引：41
|
作者：
Bantignies, J. -L.
Sauvajol, J. -L.
Rahmani, A.
Flahaut, E.
机构：
[1] Univ Montpellier 2, UMR CNRS 5587, Lab Colloides Verres & Nanomat, F-34095 Montpellier 5, France
[2] Univ MY Ismail, Fac Sci, Equipe Phys Informat & Modelisat Syst, Meknes 50000, Morocco
[3] Univ Toulouse 3, UMR CNRS 5085, Ctr Interuniv Rech & Ingn Mat, F-31602 Toulouse 4, France
来源：
PHYSICAL REVIEW B | 2006年 / 74卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.74.195425
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of the present paper is to identify the main infrared vibrational features of carbon nanotubes. In this goal, infrared experiments have been performed on different well-characterized single-walled carbon nanotubes (SWCNTs) and double-walled carbon nanotubes (DWCNTs) as well as graphite and carbon aerogel. The comparison between the experimental spectra measured on these different samples allows us to identify the infrared-active modes of carbon nanotubes. In SWCNTs, the tangential modes are located around 1590 cm(-1) and the radial mode around 860 cm(-1). This latter mode vanishes in the infrared spectrum of DWCNTs. Finally, in the infrared spectra of all the carbon nanotubes investigated, a band around 1200 cm(-1) is evidenced and assigned to the D-band (disorder-induced band).
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页数：5
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