Electronic transitions in single-walled carbon nanotubes: A resonance Raman study

被引：49
|
作者：
Rafailov, PM [1 ]
Jantoljak, H [1 ]
Thomsen, C [1 ]
机构：
[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany
来源：
PHYSICAL REVIEW B | 2000年 / 61卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.61.16179
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Resonance excitation profiles of the high-frequency peaks in the Raman spectra of single-walled carbon nanotubes normalized to the scattering intensity of CaF2 are presented. We find separate resonances of metallic and semiconducting tubes throughout the visible and the near-IR excitation range. The resonance shift of samples with different mean diameters confirm the inverse proportionality of the resonant transition energy to the tube diameter. Smaller diameter tubes are found to have sharper resonances than larger tubes due to a l/d(2) dependence of the Raman cross section.
引用
收藏
页码：16179 / 16182
页数：4
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