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    Valence excitations in individual single-wall carbon nanotubes

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    2002-29-02_APL_1.pdf (153.7Kb)
    Date
    2002-04-22
    Author
    Stöckli, Thomas
    Bonard, Jean-Marc
    Châtelain, André
    Wang, Z. L. (Zhong Lin)
    Stadelmann, Pierre
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    Abstract
    We report on measurements of the plasmon losses of individual single-wall carbon nanotubes by electron energy-loss spectroscopy in a high-resolution transmission electron microscope. The experimental data are compared to simulated excitation probabilities calculated using the hydrodynamic theory of the interaction between a probe electron and a two-dimensional quasifree electron gas confined on a cylindrical shell. Depending on the nanotube geometry, the first- or the second-order oscillation mode dominates the loss spectrum. The resonance energy of the dominant resonance mode is found to depend on the radius of the nanotube.
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    http://hdl.handle.net/1853/27104
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    • Center for Nanoscience and Nanotechnology Publications [105]

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