Faraday rotation in bilayer and trilayer graphene in the quantum Hall regime

Takahiro Morimoto, Mikito Koshino, Hideo Aoki

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Optical Hall conductivity, as directly related to Faraday rotation, is theoretically studied for bilayer and trilayer graphene. In bilayer graphene, the trigonal warping of the band dispersion greatly affects the resonance structures in Faraday rotation not only in the low-energy region where small Dirac cones emerge, but also in the higher-energy parabolic bands as a sequence of satellite resonances. In ABA-stacked trilayer, the resonance spectrum is a superposition of effective monolayer and bilayer contributions with band gaps, while ABC trilayer exhibits a distinct spectrum peculiar to the cubic-dispersed bands with a strong trigonal warping, where the signals associated with low-energy Dirac cones should be directly observable owing to a large Lifshitz transition energy (∼10meV).

Original languageEnglish
Article number155426
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number15
DOIs
Publication statusPublished - 2012 Oct 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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