One-dimensional character of combination modes in the resonance Raman scattering of carbon nanotubes
One-dimensional character of combination modes in the resonance Raman scattering of carbon nanotubes
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DOI：
10.1103/physrevlett.93.087401
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发表时间：
2004-08-20
影响因子：
8.6
通讯作者：
Pimenta, MA
中科院分区：
文献类型：
--
作者：
Fantini, C;Jorio, A;Pimenta, MA
利用共振拉曼光谱技术，对单壁碳纳米管在600-1100 cm（-1）的光谱区域进行了分析。尖锐的峰与来自2D石墨的区域折叠光学和声学分支的组合相关联。这些组合模式表现出对激发激光能量的特殊依赖性，这是基于考虑低维材料中的声子和电子的高度选择性共振过程来解释的。
Resonance Raman spectroscopy with an energy tunable system is used to analyze the 600-1100 cm(-1) spectral region in single-wall carbon nanotubes. Sharp peaks are associated with the combination of zone folded optic and acoustic branches from 2D graphite. These combination modes exhibit a peculiar dependence on the excitation laser energy that is explained on the basis of a highly selective resonance process that considers phonons and electrons in low dimensional materials.