T 45 Enyashin, A. N. Electronic, Structural, and Thermal Properties of a Nanocable Consisting of Carbon and BN Nanotubes [Text] / A. N. Enyashin, G. Seifert, A. L. Ivanovskii // JETP Letters. - 2004. - Vol. 80, № 9. - P608-611 : il. - Библиогр. : с. 611 (15 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): НАНОТРУБКИ -- КАРБОН -- НИТРИД БОРА -- СВОЙСТВА ЭЛЕКТРОННЫЕ Аннотация: 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 p–p* 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 \\\\Expert2\\nbo\\JETP Letters\\2004, V.80, N 9, P.608-611.pdf |