title: Structural ( n, m) determination of isolated single-wall carbon nanotubes by resonant Raman scattering.
abstract: We show that the Raman scattering technique can give complete structural information for one-dimensional systems, such as carbon nanotubes. Resonant confocal micro-Raman spectroscopy of an (n,m) individual single-wall nanotube makes it possible to assign its chirality uniquely by measuring one radial breathing mode frequency omega(RBM) and using the theory of resonant transitions. A unique chirality assignment can be made for both metallic and semiconducting nanotubes of diameter d(t), using the parameters gamma(0) = 2.9 eV and omega(RBM) = 248/d(t). For example, the strong RBM intensity observed at 156 cm(-1) for 785 nm laser excitation is assigned to the (13,10) metallic chiral nanotube on a Si/SiO2 surface.
authors.affiliation: Department de Physics, Massachusetts Institutr of Technology, Cambridge 02139, USA.
authors.forename: A
authors.initials: A
authors.lastname: Jorio
authors.forename: R
authors.initials: R
authors.lastname: Saito
authors.forename: J H
authors.initials: JH
authors.lastname: Hafner
authors.forename: C M
authors.initials: CM
authors.lastname: Lieber
authors.forename: M
authors.initials: M
authors.lastname: Hunter
authors.forename: T
authors.initials: T
authors.lastname: McClure
authors.forename: G
authors.initials: G
authors.lastname: Dresselhaus
authors.forename: M S
authors.initials: MS
authors.lastname: Dresselhaus