Magnetoplasmons and persistent currents in cylindrical tubules

Min-Fa Lin, Kenneth W.K. Shung

Research output: Contribution to journalArticle

60 Citations (Scopus)


The quasi-one-dimensional (1D) magnetoplasmons of a graphene tubule threaded by a magnetic field (B) have been evaluated exactly within the random-phase approximation. The plasmon frequency wp exhibits a very rich structure as a function of the magnetic flux through the tubule (φ)-including many cusps. The φ-dependent part of wp is shown to be proportional to the induced persistent-current density (J) in the tubule. Measurements on wp and J are expected to reveal insights regarding the band properties of the quasi-1D system. The structure near the cusps has been examined and is found to be related to important band parameters (e.g., the effective mass of the electrons). The results of this study may be easily generalized to systems composed of several coaxial tubules. The importance of the spin-B interaction in graphene tubules is indicated.

Original languageEnglish
Pages (from-to)5567-5571
Number of pages5
JournalPhysical Review B
Issue number8
Publication statusPublished - 1993 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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