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

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Abstract

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.

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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 80, No. 9, 2004, pp. 709–713.

Original Russian Text Copyright © 2004 by Enyashin, Seifert, Ivanovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\).

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Enyashin, A.N., Seifert, G. & Ivanovskii, A.L. Electronic, structural, and thermal properties of a nanocable consisting of carbon and BN nanotubes. Jetp Lett. 80, 608–611 (2004). https://doi.org/10.1134/1.1851644

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PACS numbers

  • 61.46.+w
  • 73.22.+i
  • 85.35.Kt