Chemically Doped Double-Walled Carbon Nanotubes: Cylindrical Molecular Capacitors
Gugang ChenDepartment of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USAShunji BandowDepartment of Materials Science and Engineering, Meijo University, Nagoya 468-8502, JapanElena R. MargineDepartment of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USACristiano NisoliDepartment of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USAAleksey N. KolmogorovDepartment of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USAVincent H. CrespiDepartment of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USARajeev GuptaDepartment of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USAGamini SumanasekeraDepartment of Physics, University of Louisville, Louisville, Kentucky 40292, USASumio IijimaDepartment of Materials Science and Engineering, Meijo University, Nagoya 468-8502, JapanP. C. EklundDepartment of Materials Science, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
2003en
ABI
Аннотация
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.
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