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D-band Raman Spectra of Graphite and Single Wall Carbon Nanotubes

Published online by Cambridge University Press:  15 March 2011

R. Saito ,
A. Grueneis ,
L. G. Cançcado ,
M. A. Pimenta ,
A. Jorio ,
A. G. Souza Filho ,
G. Dresselhaus  and
M. S. Dresselhaus
R. Saito
Affiliation:
Dept. of Electronic Eng., Univ. of Electro-Communications, Chofu Tokyo 182-8585, Japan
A. Grueneis
Affiliation:
Dept. of Electronic Eng., Univ. of Electro-Communications, Chofu Tokyo 182-8585, Japan
L. G. Cançcado
Affiliation:
Dept. de F sica, Univ. Federalde Minas Gerais, Belo Horizonte-MG, 30123-970, Brazil
M. A. Pimenta
Affiliation:
Dept. de F sica, Univ. Federalde Minas Gerais, Belo Horizonte-MG, 30123-970, Brazil
A. Jorio
Affiliation:
Dept. of Physics
A. G. Souza Filho
Affiliation:
Dept. de Fsica, Univ. Federal do Ceara, Fortaleza-CE, 60455-900, Brazil
G. Dresselhaus
Affiliation:
Francis BitterMagnet Laboratory
M. S. Dresselhaus
Affiliation:
Dept. of Physics Dept. of Electrical Eng. and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
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Abstract

The double resonance Raman spectra of the disorder-induced D-band and some other non-zone-center phonon modes are discussed for two-dimensional (2D) graphite and to some extent for single wall carbon nanotubes (SWNTs). The phonon dispersion relations of graphite can be determined using Raman spectroscopy b y measuring the non-zone center Raman phonon frequencies in combination with theoretically determined phonon q-vectors. We report a t of the phonon dispersion relations to experimental Raman spectra which were previously observed but have not y et been assigned to speci c phonon branches. We found that the D-band and the G0-band of 2D graphite consist of, respectively, two and one Raman Lorentzian peaks, while 3D graphite shows two G0-band Lorentzian peaks. The appearance of two G0 peaks in the resonance Raman spectra of SWNTs may come from resonances of one laser line with two di erent van Hov e singularities.

Type
Article
Information
MRS Online Proceedings Library (OPL) , Volume 706: Symposium Z – Making Functional Materials with Nanotubes , 2001 , Z9.3.1
Copyright
Copyright © Materials Research Society 2002

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