Electronic Raman scattering and the Fano resonance in metallic carbon nanotubes
Electronic Raman scattering and the Fano resonance in metallic carbon nanotubes
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DOI：
10.1103/physrevb.88.115107
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发表时间：
2013-09-05
影响因子：
3.7
通讯作者：
Saito, Riichiro
中科院分区：
文献类型：
--
作者：
Hasdeo, Eddwi H.;Nugraha, Ahmad R. T.;Saito, Riichiro
计算了金属碳纳米管G带的Fano共振谱随激光激发能量的变化，其中共振的起源是由连续电子拉曼谱和离散声子谱之间的干涉给出的.我们发现q不等于0的电子-电子相互作用的二级散射过程比q = 0的一级散射过程更与连续谱相关，因为q = 0的直接库仑相互作用由于碳纳米管的两个子晶格的对称性而消失。
The Fano resonance spectra for the G band in metallic carbon nanotubes are calculated as a function of laser excitation energy, in which the origin of the resonance is given by an interference between the continuous electronic Raman spectra and the discrete phonon spectra. We found that the second-order scattering process of the q not equal 0 electron-electron interaction is more relevant to the continuous spectra rather than the q = 0 first-order process because the q = 0 direct Coulomb interaction vanishes due to the symmetry of the two sublattices of a carbon nanotube.