title: Fractional Hofstadter States in Graphene on Hexagonal Boron Nitride.
abstract: In fractionally filled Landau levels there is only a small energy difference between broken translational symmetry electron-crystal states and exotic correlated quantum fluid states. We show that the spatially periodic substrate interaction associated with the long period moiré patterns present in graphene on nearly aligned hexagonal boron nitride tilts this close competition in favor of the former, explaining surprising recent experimental findings.
authors.affiliation: Department of Physics, The University of Texas at Austin, Austin, Texas 78712-1192, USA.
authors.forename: Ashley M
authors.initials: AM
authors.lastname: DaSilva
authors.affiliation: Department of Physics, University of Seoul, Seoul 02504, Korea.
authors.forename: Jeil
authors.initials: J
authors.lastname: Jung
authors.affiliation: Department of Physics, The University of Texas at Austin, Austin, Texas 78712-1192, USA.
authors.forename: Allan H
authors.initials: AH
authors.lastname: MacDonald