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16 April 2024

» arxiv » cond-mat/0606396

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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 ;
Date:	15 Jun 2006
Subject:	Mesoscopic Systems and Quantum Hall Effect; Materials Science
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.
Source:	arXiv, cond-mat/0606396
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