Title: Collective excitations in a single-layer carbon nanotube
Authors: Lin, MF
Chuu, DS
Huang, CS
Lin, YK
Shung, KWK
Department of Electrophysics
Issue Date: 15-Jun-1996
Abstract: The inter-pi-band response function of a single-layer carbon nanotube is calculated within the random-phase approximation. Such a cylindrical system exhibits rich inter-pi-band excitations. The decoupled pi plasmons;of different angular momenta (L's) strongly depend on the transferred momenta (q's). Furthermore, they exhibit a dimensionality crossover as the nanotube radius is increased. For small q's and L's, the pi plasmon frequency is similar to 6-8 eV, which is insensitive to the nanotube geometry such as the radius and chiral angle. Comparison with recent experiments is discussed.
URI: http://hdl.handle.net/11536/1225
ISSN: 0163-1829
Volume: 53
Issue: 23
Begin Page: 15493
End Page: 15496
Appears in Collections:Articles