Trigonal warping effect on velocity and transverse confinement length of topologically confined states in bilayer graphene

Diana A. Cosma, Vladimir I. Fal'Ko

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In bilayer graphene an interface between regions with opposite sign of the interlayer asymmetry gap leads to the spatial confinement of low-energy chiral modes [I. Martin, Y. M. Blanter, and A. F. Morpurgo, Phys. Rev. Lett. 100, 036804 (2008)PRLTAO0031-900710.1103/PhysRevLett.100.036804]. Here we study the influence of trigonal warping on the properties of the interface-guided stats and find that in the vicinity of the band edges the group velocity and transverse confinement length exhibit a nonmonotonic dependence on the crystallographic orientation of the crystal with respect to the interface.

    Original languageEnglish
    Article number165412
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume92
    Issue number16
    DOIs
    Publication statusPublished - 12 Oct 2015

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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