Broken sublattice symmetry states in Bernal stacked multilayer graphene

ORAL

Abstract

We analyze the ordered phases of Bernal stacked multilayer graphene in the presence of interaction induced band gaps due to sublattice symmetry breaking potentials, whose solutions can be analyzed in terms of light-mass and heavy-mass pseudospin doublets which have the same Chern numbers but opposite charge polarization directions. The application of a perpendicular external electric field reveals an effective Hund's rule for the ordering of the sublattice pseudospin doublets in a tetralayer, while a similar but more complex phase diagram develops with increasing layer number.

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Authors

  • Chiho Yoon

    Seoul National University

  • Yunsu Jang

    Seoul National University

  • Jeil Jung

    University of Seoul, Department of Physics, University of Seoul, Seoul 02504, Korea

  • Hongki Min

    Seoul National University, Department of Physics and Astronomy, Seoul National University, Seoul Natl Univ