Conference proceeding
Theory of Raman Spectra of Unfilled and Filled Carbon Nanotube
MESOSCOPIC, NANOSCOPIC, AND MACROSCOPIC MATERIALS, v 1063
01 Jan 2008
Abstract
The Raman spectra of two G-bands and a radial breathing mode (RBM) of unfilled and filled single-wall semi conducting and metallic carbon nanotubes have been investigated in the presence of electron-phonon and phonon-phonon interactions. Excitation of low frequency optical plasmons in the metallic nanotube is shown to be responsible for the asymmetric band known as the Breit-Wigner-Fano (BWF) line shape in the G-band Raman spectra. In a filled nanotube there is an additional peak due to excitation of the phonon of the filling atom or molecule. Positions, shapes and relative strengths of these Raman peaks depend on the phonon frequencies of the nanotube and that of the filling atoms, and strengths and forms of the electron-phonon and phonon-phonon interactions. Raman spectra of semiconducting unfilled and filled nanotubes have similar behavior as those of metallic nanotubes except that normally they have Lorentzian line shapes and do not show a BWF line shape. However, if a semiconducting nanotube is filled with donor atoms, it is predicted that the BWF type line shape may be observed near the RBM, or the G-band or the filling atom Raman peak, which can be used as a tool to measure the filling fraction of a semiconducting nanotube.
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Details
- Title
- Theory of Raman Spectra of Unfilled and Filled Carbon Nanotube
- Creators
- S. M. Bose - Drexel UniversityS. N. Behera - Inst Mat Sci Agh, Bhubaneswar 751013, Orissa, IndiaS. Gayen - Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA
- Contributors
- S M Bose (Editor)S N Behera (Editor)B K Roul (Editor)
- Publication Details
- MESOSCOPIC, NANOSCOPIC, AND MACROSCOPIC MATERIALS, v 1063
- Series
- AIP Conference Proceedings
- Publisher
- American Institute of Physics
- Number of pages
- 3
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:000261594600009
- Scopus ID
- 2-s2.0-85006208129
- Other Identifier
- 991019170137204721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied