title: Chemically doped double-walled carbon nanotubes: cylindrical molecular capacitors.
abstract: A double-walled carbon nanotube is used to study the radial charge distribution on the positive inner electrode of a cylindrical molecular capacitor. The outer electrode is a shell of bromine anions. Resonant Raman scattering from phonons on each carbon shell reveals the radial charge distribution. A self-consistent tight-binding model confirms the observed molecular Faraday cage effect, i.e., most of the charge resides on the outer wall, even when this wall was originally semiconducting and the inner wall was metallic.
authors.affiliation: Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Gugang
authors.initials: G
authors.lastname: Chen
authors.forename: S
authors.initials: S
authors.lastname: Bandow
authors.forename: E R
authors.initials: ER
authors.lastname: Margine
authors.forename: C
authors.initials: C
authors.lastname: Nisoli
authors.forename: A N
authors.initials: AN
authors.lastname: Kolmogorov
authors.forename: Vincent H
authors.initials: VH
authors.lastname: Crespi
authors.forename: R
authors.initials: R
authors.lastname: Gupta
authors.forename: G U
authors.initials: GU
authors.lastname: Sumanasekera
authors.forename: S
authors.initials: S
authors.lastname: Iijima
authors.forename: P C
authors.initials: PC
authors.lastname: Eklund