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Phys. Rev. B 65, 201402(R) (2002) [4 pages]

Characterization of carbon nanotubes using Raman excitation profiles

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M. Canonico1,2, G. B. Adams1, C. Poweleit1, J. Menéndez1,3, J. B. Page1, G. Harris2, H. P. van der Meulen3, J. M. Calleja3, and J. Rubio3
1Department of Physics and Astronomy, Arizona State University, P.O. Box 871504, Tempe, Arizona 85287-1504
2Motorola SPS, DigitalDNA Strategy Office, 2100 East Elliot Road, Tempe, Arizona 85284
3Departamento de Física de Materiales, C-IV Universidad Autónoma de Madrid, Cantoblanco, Madrid 28049, Spain

Received 11 October 2001; revised 12 March 2002; published 7 May 2002

Resonance Raman excitation profiles for several radial-breathing modes in carbon nanotubes have been measured using tunable lasers. It is shown that the line shapes of the excitation profiles are a powerful tool for the characterization of the nanotubes. In particular, profiles that follow theoretical predictions for a single one-dimensional singularity in the joint density of states can be assigned to armchair tubes. These assignments do not rely on the quantitative details of electronic structure calculations.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.201402
DOI:
10.1103/PhysRevB.65.201402
PACS:
73.63.Fg, 78.30.Na
 
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