Electronic and mechanical coupling of carbon nanotubes: a tunable resonant Raman study of systems with known structures

We report on the first tunable resonant Raman scattering study performed on suspended isolated and coupled single-wall carbon nanotubes, unambiguously identified by electron diffraction. Besides the confirmation of the relation between the structural properties, the radial breathing frequency and th...

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Bibliographic Details
Published inPhysical review letters Vol. 101; no. 19; p. 197403
Main Authors Débarre, A, Kobylko, M, Bonnot, A M, Richard, A, Popov, V N, Henrard, L, Kociak, M
Format Journal Article
LanguageEnglish
Published United States 07.11.2008
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Summary:We report on the first tunable resonant Raman scattering study performed on suspended isolated and coupled single-wall carbon nanotubes, unambiguously identified by electron diffraction. Besides the confirmation of the relation between the structural properties, the radial breathing frequency and the optical resonances for isolated metallic nanotubes, we evidence that interacting nanotubes experience drastic modifications of their resonance fingerprints. We first demonstrate a degeneracy lifting of an electronic level in a bundle of identical zigzag nanotubes. We then show the existence of a strong energy transfer mediated by a mechanical coupling between two nonidentical bundled nanotubes.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.101.197403