Diameter dependence of the Raman D-band in isolated single-wall carbon nanotubes

M. A. Pimenta, A. Jorio, S. D. Brown, G. Dresselhaus, J. H. Hafner, C. M. Lieber, R. Saito, A. G. Souza Filho, M. S. Dresselhaus

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127 Citations (Scopus)


Raman D-band spectra are reported for several different SWNTs using two different laser energies (Elaser =1.58 and 2.41 eV). At a fixed Elaser, individual isolated SWNTs exhibit different diameter-dependent D-band frequencies ωD around an average value. For both semiconducting and metallic tubes, ωD decreases with decreasing nanotube diameter, though ωD for isolated metallic SWNTs is higher than for isolated semiconducting SWNTs. The average D-band frequency depends linearly on Elaser, as previously observed for SWNT bundles, suggesting that the D-band in SWNTs is activated by defects or by the finite size of the SWNTs.

Original languageEnglish
Article number041401
Pages (from-to)414011-414014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
Publication statusPublished - 2001 Jul 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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