title: Vanishing of the Breit-Wigner-Fano component in individual single-wall carbon nanotubes.
abstract: In order to decide definitely on the dependence of the intensity of the Breit-Wigner-Fano (BWF) component with the size of the bundle, we have measured the radial breathing modes and tangential modes (TMs) of well defined metallic individual single-wall carbon nanotubes (SWCNTs) and individual SWCNT bundles. In this aim, a complete procedure including the preparation of the substrates, the sample preparation, atomic-force-microscopy imaging and Raman spectroscopy has been developed. From this procedure, we show unambiguously that the BWF component vanishes in isolated metallic SWCNTs. In other words, the observation of a BWF component in the TM bunch is an intrinsic feature of the metallic SWCNT bundle.
authors.affiliation: Groupe de Dynamique des Phases Condensées, UMR CNRS 5581, Université Montpellier II, 34095 Montpellier Cedex 5, France.
authors.forename: M
authors.initials: M
authors.lastname: Paillet
authors.forename: Ph
authors.initials: P
authors.lastname: Poncharal
authors.forename: A
authors.initials: A
authors.lastname: Zahab
authors.forename: J-L
authors.initials: JL
authors.lastname: Sauvajol
authors.forename: J C
authors.initials: JC
authors.lastname: Meyer
authors.forename: S
authors.initials: S
authors.lastname: Roth