Band gaps of primary metallic carbon nanotubes - art. no. 073408

Citation
A. Kleiner et S. Eggert, Band gaps of primary metallic carbon nanotubes - art. no. 073408, PHYS REV B, 6307(7), 2001, pp. 3408
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
0163-1829 → ACNP
Volume
6307
Issue
7
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010215)6307:7<3408:BGOPMC>2.0.ZU;2-9
Abstract
Primary metallic or small-gap semiconducting nanotubes are tubes with band gaps that arise solely from breaking the bond symmetry due to curvature. We derive an analytic expression for these gaps by considering how a general symmetry breaking opens a gap in nanotubes with a well-defined chiral wrapp ing vector. This approach provides a straightforward way to include all typ es of symmetry-breaking effects, resulting in a simple unified gap equation as a function of chirality and deformations.