Open AccessDiscrete-continuous spectral transition in single wall toroidal carbon nanotubes
Author(s) -
Liu Chao-Ping,
Ding Jian-Wen,
Xin Yan
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.3472
Subject(s) - toroid , torus , carbon nanotube , radius , physics , wave function , curvature , tight binding , molecular physics , atomic physics , materials science , condensed matter physics , electronic structure , nanotechnology , quantum mechanics , geometry , mathematics , plasma , computer security , computer science
Taken into account the curvature effectswe build a singleπ orbital tight-bi ndi ng model for armchair toroidal carbon nanotubes, from which the interaction matr i x elements have been derived by means of the wavefunction decomposition method. The electronic structures of armchair toroidal carbon nanotubes are studied, whi ch are dependent on both the torus radius and the tube radius. The energy spectr al transition is observed from the discrete to continuous ones, as the t orus radius and the tube radius are varied.