Optical manifestations of symmetry breaking in bilayer graphene

D. S L Abergel*, Vladimir I. Fal'Ko

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We propose a spectroscopic method of identifying broken symmetry states of bilayer graphene. We demonstrate theoretically that, in contrast to gapped states, a strained bilayer crystal or nematic phase of the electronic liquid are distinguishable by the dependence of the line shape of absorption on the polarization of the light. This property is characteristic for both the infrared and far-infrared spectral ranges, which correspond to the absorption by transitions between low-energy bands and split bands, and transitions between the low-energy valence and conduction bands, respectively.

    Original languageEnglish
    Article number041410
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume86
    Issue number4
    DOIs
    Publication statusPublished - 31 Jul 2012

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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