Raman spectra of filled carbon nanotubes

2020-02-13 11:15:53

carbon interaction Raman nanotube phonon

责任者: Bose, S.M.;Behera, S.N.;Sarangi, S.N.;Entel, P. 单位: Dept. of Phys., Drexel Univ., Philadelphia, PA, USA 来源出处: Physica B(Physica B (Netherlands)),2004/08/15,351(1-2):129-36 摘要: The Raman spectra of a metallic carbon nanotube filled with atoms or molecules have been investigated theoretically. It is found that there is a three way splitting of the main Raman lines due to the interaction of the nanotube phonon with the collective excitations (plasmons) of the conduction electrons of the nanotube as well as its coupling with the phonon of the filling material. The positions and relative strengths of these Raman peaks depend on the strength of the electron-phonon interaction, phonon frequency of the filling atom and the strength of interaction of the nanotube phonon and the phonon of the filling atoms. Careful experimental studies of the Raman spectra of filled nanotubes should show these three peaks. It is also shown that in a semiconducting nanotube, the Raman line splits into two and should be observed experimentally 关键词: carbon nanotubes;electron-phonon interactions;plasmons;polaritons;Raman spectra;semiconductor materials;Raman spectra;filled carbon nanotubes;Raman lines;nanotube phonon interaction;collective excitations;phonon coupling;electron-phonon interaction;phonon frequency;plasmons;metallic carbon nanotube;nanotube phonon;conduction electrons;semiconducting nanotube;C