Coupling and scattering power exchange between phonon modes observed in surface-enhanced Raman spectra of single-wall carbon nanotubes on silver colloidal clusters

K. Kneipp, L. T. Perelman, H. Kneipp, V. Backman, A. Jorio, G. Dresselhaus, M. S. Dresselhaus

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

In the surface-enhanced Raman spectra of single-wall carbon nanotubes on silver colloidal clusters, at high excitation laser intensities, we observed with increasing laser excitation intensity, an exchange in the scattering power between two phonon modes that constitute the 1590cm−1feature of the G band. We explain this effect in terms of phonon-phonon coupling, which occurs for the extremely strong Raman effect in intense optical fields in the “hot” areas of silver clusters.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number19
DOIs
StatePublished - May 1 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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