Edge states on graphene ribbons in magnetic field: Interplay between Dirac and ferromagnetic-like gaps

V. P. Gusynin, V. A. Miransky, S. G. Sharapov, Igor Shovkovy, C. M. Wyenberg

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Abstract

By combining analytic and numerical methods, edge states on a finite width graphene ribbon in a magnetic field are studied in the framework of low-energy effective theory that takes into account the possibility of quantum Hall ferromagnetism gaps and dynamically generated Dirac-type masses. The analysis is done for graphene ribbons with both zigzag and armchair edges. The characteristic features of the spectrum of the edge states in both these cases are described. In particular, the conditions for the existence of the gapless edge states are established. Implications of these results for the interpretation of recent experiments are discussed.

Original languageEnglish (US)
Article number115431
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number11
DOIs
Publication statusPublished - Mar 3 2009

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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