Optical Determination of Electron-Phonon Coupling in Carbon Nanotubes

Details Optical Determination of Electron-Phonon Coupling in Carbon Nanotubes Optical Determination of Electron-Phonon Coupling in Carbon Nanotubes

2006-05-26

arxiv.org/abs/cond-mat/0605670v2

Physical Review Letters, Vol. 98, No. 3, 037404, 19 January 2007

Physics

Condensed Matter

Materials Science

Corrected a mistake in the references

Scientific paper

10.1103/PhysRevLett.98.037404

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, depending on chirality. The results are in good agreement with the chirality and diameter dependence calculated by Goupalov et al.

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