Baman scattering intensity of single-wall carbon nanotubes

摘要 利用非共振情况下的键极化模型理论，对单壁碳纳米管的拉曼光谱强度进行了研究.考察了碳纳米管结构、入射光和散射光的偏振方向以及管轴的取向对散射光强度的影响.计算结果表明，光的偏振方向对拉曼散射强度影响较大，而手性对拉曼光谱的影响较小.针对碳管样品的实际情况，给出了无规取向碳管的拉曼散射光谱. 关键词: 碳纳米管 / 拉曼散射 / 声子 / 键极化 Abstract A study based on non-resonant bond polrizability model is maded on the Raman scattering intensity of single-wall carbon nanotube.The structure of nanotube,polarization of light and sample orientation dependence of the Raman intensity was discussed by varying the direction of the nanotube axis.It is found that the polarization of light have large effect on the Raman spectra,while the chirality of the carbon nanotube has little effect.The chirality and diameter dependence of the Raman intensity were calculated using the theory of randomly oriented particles. Keywords: carbon nanotube / Raman scattering / phonon / bond polarizability 作者及机构信息 吴延昭, 于 平, 王玉芳, 金庆华, 丁大同, 蓝国祥 1. 南开大学物理科学学院,天津 300071 基金项目: 国家重点基础研究发展规划(批准号：2002CB211800)和基础研究重大项目前期研究专项基金(批准号：2001CCA05000)资助的课题. Authors and contacts Wu Yan-Zhao, Yu Ping, Wang Yu-Fang, Jin Qing-Hua, Ding Da-Tong, Lan Guo-Xiang 1. 南开大学物理科学学院,天津 300071 参考文献 施引文献