標題: | Collective excitations in a single-layer carbon nanotube |
作者: | Lin, MF Chuu, DS Huang, CS Lin, YK Shung, KWK 電子物理學系 Department of Electrophysics |
公開日期: | 15-六月-1996 |
摘要: | 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://dx.doi.org/10.1103/PhysRevB.53.15493 http://hdl.handle.net/11536/1225 |
ISSN: | 0163-1829 |
DOI: | 10.1103/PhysRevB.53.15493 |
期刊: | PHYSICAL REVIEW B |
Volume: | 53 |
Issue: | 23 |
起始頁: | 15493 |
結束頁: | 15496 |
顯示於類別: | 期刊論文 |