Anisotropy of the Raman spectra of nanographite ribbons -: art. no. 047403
Anisotropy of the Raman spectra of nanographite ribbons -: art. no. 047403
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DOI：
10.1103/physrevlett.93.047403
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发表时间：
2004-07-23
影响因子：
8.6
通讯作者：
Jorio, A
中科院分区：
文献类型：
--
作者：
Cançado, LG;Pimenta, MA;Jorio, A
报道了在高取向热解石墨衬底上的纳米石墨带的偏振拉曼光谱研究。纳米石墨带的拉曼峰的强度依赖于相对于纳米石墨带轴的光偏振方向。这一结果是由于纳米石墨带的1D能带结构中的电子的量子限制，结合2D石墨中光吸收的各向异性，与理论预测一致。
A polarized Raman study of nanographite ribbons on a highly oriented pyrolytic graphite substrate is reported. The Raman peak of the nanographite ribbons exhibits an intensity dependence on the light polarization direction relative to the nanographite ribbon axis. This result is due to the quantum confinement of the electrons in the 1D band structure of the nanographite ribbons, combined with the anisotropy of the light absorption in 2D graphite, in agreement with theoretical predictions.