Electronic, structural, and thermal properties of a nanocable consisting of carbon and BN nanotubes

  • A. N. Enyashin
  • G. Seifert
  • A. L. Ivanovskii
Condensed Matter


The band structure and thermal behavior of a coaxial C/BN nanocable (5,5)C@(17,0)BN consisting of a carbon nanotube and a boron nitride nanotube have been studied using a tight-binding approximation based on density functional theory. The system is stable up to T∼3500–3700 K. As the temperature increases, deformations of the BN tube begin earlier than those of the carbon tube. The near-Fermi states of the nanocable are formed by the overlapping π-π* bands of the carbon tube, and the outer BN nanotube (the nanocable sheath) is an insulator with a bandgap of ∼4 eV. The electronic properties of the nanocable (the metallic-type conductivity of the C tube and the insulating character of the BN tube) are retained over the entire temperature interval.

PACS numbers

61.46.+w 73.22.+i 85.35.Kt 


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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • A. N. Enyashin
    • 1
    • 2
  • G. Seifert
    • 1
  • A. L. Ivanovskii
    • 2
  1. 1.Institut für Physikalische ChemieTechnische Universität DresdenDresdenGermany
  2. 2.Institute of Solid-State Chemistry, Ural DivisionRussian Academy of SciencesYekaterinburgRussia

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