Electronic response and bandstructure modulation of carbon nanotubes in a transverse electrical field

Yan Li, Slava V. Rotkin, Umberto Ravaioli

Research output: Contribution to journalArticle

127 Scopus citations

Abstract

The electronic properties of carbon nanotubes (NTs) in a uniform transverse field are investigated within a single orbital tight-binding (TB) model. For doped nanotubes, the dielectric function is found to depend not only on symmetry of the tube, but also on radius and Fermi level position. Band gap opening/closing is predicted for zigzag tubes, while it is found that armchair tubes always remain metallic, which is explained by the symmetry in their configuration. The bandstructures for both types are considerably modified when the field strength is large enough to mix neighboring subbands.

Original languageEnglish (US)
Pages (from-to)183-187
Number of pages5
JournalNano letters
Volume3
Issue number2
DOIs
StatePublished - Feb 1 2003

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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