Double resonant raman phenomena enhanced by van Hove singularities in single-wall carbon nanotubes

J. Kürti, V. Zólyomi, A. Grüneis, H. Kuzmany

Research output: Contribution to journalArticle

141 Citations (Scopus)

Abstract

The behavior of the disorder-induced D band in the Raman spectrum of single-wall carbon nanotubes (SWCNT's) was investigated both theoretically and experimentally. The measured maximum position of the D band for SWCNT bundles exhibits an oscillation superimposed on a linear shift, when the laser excitation energy Elaser varies in the range of 1.6-2.8 eV. We have shown theoretically by explicit integrations for the resonant Raman cross section that the D-band intensity of an isolated SWCNT has a sharp maximum when Elaser of either the incoming or the scattered photon matches a van Hove singularity in the joint density of states. This "resonance" must be considered in addition to the double resonance from a scattering by an impurity. Calculating the D band of a superposition of all the 114 SWCNT's within a given diameter range, both the shift and the oscillation in the experimentally observed spectra were reproduced.

Original languageEnglish
Article number165433
Pages (from-to)1654331-1654339
Number of pages9
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number16
Publication statusPublished - Apr 15 2002

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Carbon Nanotubes
trucks
Carbon nanotubes
carbon nanotubes
oscillations
Laser excitation
Excitation energy
shift
bundles
Raman scattering
Photons
disorders
Scattering
Impurities
Raman spectra
impurities
cross sections
photons
scattering
excitation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Double resonant raman phenomena enhanced by van Hove singularities in single-wall carbon nanotubes. / Kürti, J.; Zólyomi, V.; Grüneis, A.; Kuzmany, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 16, 165433, 15.04.2002, p. 1654331-1654339.

Research output: Contribution to journalArticle

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