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Dependence of the Second-order G'-band Profile on the Electronic Structure of Single-wal Nanotubes

Published online by Cambridge University Press:  15 March 2011

A. G. Souza Filho ,
A. Joribo ,
G. Dresselhaus ,
M. S. Dresselhaus ,
A. K. Swan ,
M. S. Ünlü ,
B. B. Goldberg ,
J. H. Hafner ,
C. M. Lieber  and
M. A. Pimenta
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A. G. Souza Filho
Affiliation:
Univ. Federal do Ceará, Fortaleza, CE 60455-900, Brazil
A. Joribo
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139-4307
G. Dresselhaus
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139-4307
M. S. Dresselhaus
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139-4307
A. K. Swan
Affiliation:
Boston University, Boston, MA 02215
M. S. Ünlü
Affiliation:
Boston University, Boston, MA 02215
B. B. Goldberg
Affiliation:
Boston University, Boston, MA 02215
J. H. Hafner
Affiliation:
Harvard University, Cambridge, MA 02138
C. M. Lieber
Affiliation:
Harvard University, Cambridge, MA 02138
M. A. Pimenta
Affiliation:
Univ. Federa de Minas Gerais, Belo Horizonte, MG 30123-970, Brazil
R. Saito
Affiliation:
Univ. of Electro-Communications, Tokyo, 182-8585, Japan
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Abstract

We analyze the dependence of the second-order G'-band profile in terms of their (n,m) indices by measuring the resonance Raman spectra of several semiconducting and metalic isolated single wal carbon nanotubes. We show that this profile is very sensitive to the electronic structure, thus making it possible to get structural (n,m) information and to probe the splitting of the van Hove singularities in the electronic density of states due to the trigona warping effect.

Type
Article
Information
MRS Online Proceedings Library (OPL) , Volume 706: Symposium Z – Making Functional Materials with Nanotubes , 2001 , Z6.17.1
Copyright
Copyright © Materials Research Society 2002

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References

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