Broken symmetry, boundary conditions, and band-gap oscillations in finite single-wall carbon nanotubes

Journal Article · Sun Jul 15 00:00:00 EDT 2001 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.64.033414· OSTI ID:40277067

Liu, Lei; Jayanthi, C S; Guo, H; Wu, S Y

The interplay between the broken symmetry and the boundary conditions alters profoundly the electronic properties of carbon single-wall nanotubes (SWNTs) of finite-lengths. For SWNTs (p,q) characterized by p=k+l, q=k-l, 0{<=}l{le}k, and k=1,2,..., the energy gaps for finite SWNTs belonging to a given family k exhibit strikingly similar oscillating patterns for even NT sections, but the gap maxima for SWNTs of different lengths exhibit different periodicities with the amplitudes of oscillations diminishing from the armchair, to chiral, and to the zigzag SWNTs.

• Sponsoring Organization: (US)
• DOE Contract Number: FG02-00ER45832
• OSTI ID: 40277067
• Journal Information: Physical Review B, Vol. 64, Issue 3; Other Information: DOI: 10.1103/PhysRevB.64.033414; Othernumber: PRBMDO000064000003033414000001; 084127PRB; PBD: 15 Jul 2001; ISSN 0163-1829
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
BOUNDARY CONDITIONS
CARBON
ENANTIOMORPHS
ENERGY GAP
OSCILLATIONS
SYMMETRY