Observation of breathing-like modes in an individual multiwalled carbon nanotube |
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Authors: | Spudat Christian Müller Matthias Houben Lothar Maultzsch Janina Goss Karin Thomsen Christian Schneider Claus M Meyer Carola |
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Affiliation: | Institut fu?r Festko?rperforschung IFF-9, Forschungszentrum Ju?lich and JARA Ju?lich Aachen Research Alliance, D-52425 Ju?lich, Germany. |
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Abstract: | We study collective vibrational breathing modes in the Raman spectrum of a multiwalled carbon nanotube. In correlation with high-resolution transmission electron microscopy, we find that these modes have energies differing by more than 23% from the radial breathing modes of the corresponding single-walled nanotubes. This shift in energy is explained with intershell interactions using a model of coupled harmonic oscillators. The strength of this interaction is related to the coupling strength expected for few-layer graphene. |
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