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dc.contributor.authorLin, MFen_US
dc.contributor.authorChuu, DSen_US
dc.date.accessioned2019-04-02T06:00:22Z-
dc.date.available2019-04-02T06:00:22Z-
dc.date.issued1997-03-01en_US
dc.identifier.issn0031-9015en_US
dc.identifier.urihttp://dx.doi.org/10.1143/JPSJ.66.757en_US
dc.identifier.urihttp://hdl.handle.net/11536/149483-
dc.description.abstractA carbon nanotube exhibits the decoupled pi plasmons of different angular momenta (L's). The magnetic Aux is expected to be useful in identifying them. All the L-decoupled plasmons have strong dispersion relations with momentum (q). The L not equal 0 plasmons belong to optical plasmons, while the L = 0 plasmon could not exist at q --> 0. The former, respectively, behave as the plasmons in three- and two-dimensional electron gases at small and large q's. The plasmon frequencies would be affected by radius, chiral angle, and intertube interaction. To obtain the actual plasmon frequencies of a multi-shell nanotube, the intertube interactions from the neighboring shells have to be taken into account. The calculated results are consistent with the experimental measurements. A detailed comparison between a carbon nanotube and a graphite layer is also made. These two related systems may exhibit similar pi plasmons, when L = 0 in a nanotube. Furthermore, the chirality effect of the former corresponds to the anisotropy effect of the latter. The predicted q-, L-, and geometry-dependence of the pi plasmons needs further experimental verifications.en_US
dc.language.isoen_USen_US
dc.subjectelementary excitationsen_US
dc.subjectpi plasmonen_US
dc.subjectcarbon nanotubeen_US
dc.titleElementary excitations in a carbon nanotubeen_US
dc.typeArticleen_US
dc.identifier.doi10.1143/JPSJ.66.757en_US
dc.identifier.journalJOURNAL OF THE PHYSICAL SOCIETY OF JAPANen_US
dc.citation.volume66en_US
dc.citation.spage757en_US
dc.citation.epage764en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:A1997WT19000041en_US
dc.citation.woscount4en_US
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