Optical determination of electron-phonon coupling in carbon nanotubes

Y. Yin*, A. N. Vamivakas, A. G. Walsh, S. B. Cronin, M. S. Ünlü, B. B. Goldberg, A. K. Swan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

We report on an optical method to directly measure electron-phonon coupling in carbon nanotubes by correlating the first and second harmonic of the resonant Raman excitation profile. The method is applicable to 1D and 0D systems and is not limited to materials that exhibit photoluminescence. Experimental results for electron-phonon coupling with the radial breathing mode in 5 different nanotubes show coupling strengths from 3€"11 meV. The results are in good agreement with the chirality and diameter dependence of the e-ph coupling calculated by Goupalov et al.

Original languageEnglish (US)
Article number037404
JournalPhysical review letters
Volume98
Issue number3
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • General Physics and Astronomy

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