Controlling edge states of zigzag carbon nanotubes by the Aharonov-Bohm flux

K. Sasaki, S. Murakami, R. Saito, Y. Kawazoe

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

It has been known theoretically that localized states exist around the zigzag edges of a graphite ribbon and of a carbon nanotube, whose energy eigenvalues are located between conduction and valence bands. We find that in metallic, zigzag single-walled, carbon nanotubes two of the localized states become critical, and that their localization length is sensitive to the mean curvature of a tube, and it can be controlled by the Aharonov-Bohm flux. The curvature-induced mini gap closes by the relatively weak magnetic field. A conductance measurement in the presence of the Aharonov-Bohm flux can give information about the curvature effect and the critical states.

Original languageEnglish
Article number195401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number19
DOIs
Publication statusPublished - 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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