Elementary excitations in cylindrical tubules

Min-Fa Lin, Kenneth W.K. Shung

研究成果: Article同行評審

148 引文 斯高帕斯(Scopus)

摘要

A detailed study of the elementary excitations of an electron gas confined to a tubule system is presented. The system could consist either of a single cylindrical tubule or of several tubules sharing a common axis. Graphene tubules with a radius as small as 11 have been recently realized. Essential features revealed from this study are expected to be common to the graphene tubules. The dielectric function of the quasi-one-dimensional (1D) tubular system has been evaluated exactly within the random-phase approximation, where both the intrasubband and the intersubband excitations are included. The angular momentum (L) is conserved in the tubule system. The excitations, e.g., plasmons, of different L's are thus mutually decoupled. At any given L, only a small number of plasmon branches exist, every one of which can be studied systematically. Intertubule interaction for coaxial tubules has been included. The coupling among coaxial tubules adds unique features that distinguish the tubules from other quasi-1D systems.

原文English
頁(從 - 到)6617-6624
頁數8
期刊Physical Review B
47
發行號11
DOIs
出版狀態Published - 1993 一月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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