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arXiv · cond-mat/0606396

Coherent Lattice Vibrations in Carbon Nanotubes

Y. S. Lim·K. J. Yee·J. H. Kim·J. Shaver·E. H. Haroz·J. Kono·S. K. Doorn·R. H. Hauge·R. E. Smalley
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Abstract

We have generated and detected the radial-breathing mode of coherent lattice vibrations in single-walled carbon nanotubes using ultrashort laser pulses. Because the band gap is a function of diameter, these diameter oscillations cause ultrafast band gap oscillations, modulating interband excitonic resonances at the phonon frequencies (3-9 THz). Excitation spectra show a large number of pronounced peaks, mapping out chirality distributions in great detail.

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Y. S. Lim, K. J. Yee, J. H. Kim, J. Shaver, E. H. Haroz, J. Kono, S. K. Doorn, R. H. Hauge, R. E. Smalley. 2006-06-16. Coherent Lattice Vibrations in Carbon Nanotubes. https://doi.org/10.1021/nl061599p

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