Exact solutions to the tight-binding model for the conductance of carbon nanotubes

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Abstract

The exact form of the Green's function in the armchair-type carbon nanotube with the tight-binding Hamiltonian is derived and the analytic expressions for the conductance of the nanotube with local perturbations are obtained. The results show the explicit functional dependence of the conductance on the Fermi level, the tubular radius, and the strength of the perturbations. The change of on-site energy at one or two atomic sites as an examples is considered. Eventhough, the exact form of the Green's function and the computational scheme for the conductance may be used for any kinds of local defects including topological defects, such as the pentagon-heptagon-pair defect.

Original languageEnglish
Pages (from-to)385-390
Number of pages6
JournalSolid State Communications
Volume111
Issue number7
DOIs
Publication statusPublished - 1999 Jul 14

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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