The role of environmental effects on the optical transition energies and radial breathing mode frequency of single wall carbon nanotubes

被引：40

作者：

Araujo, P. T. ^{[1
]}

Jorio, A. ^{[1
,2
]}

机构：

[1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

[2] Inst Nacl Metrol Normalizacao & Qualidade Ind Inm, Div Mat Metrol, BR-25250020 Duque De Caxias, RJ, Brazil

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2008年 / 245卷 / 10期

关键词：

D O I：

10.1002/pssb.200879625

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper we discuss the environmental effects on the radial breathing mode (RBM) spectra of Single Wall Carbon Nanotubes (SWNTs). We have shown that the environmental effect on the radial breathing mode frequencies can be explained by Van-der-Waals interactions. We here explore these interactions concerning its (n, m) dependence and curvature effects. Furthermore, most of the optical transition energies available in the literature (E-ii(Lit.)) are downshifted with respect to the optical transition energies for super-growth (S.G.) tubes (E-ii(S.G.)). The effect on transition energies can be understood considering the effect of the dielectric constant of the medium in the excitonic optical transition. (C) 2008 WILEY-VCH Veriag GmbH & Co. KGaA, Weinheim

引用

页码：2201 / 2204

页数：4

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