title: Gapped bilayer graphene: a tunable strongly correlated band insulator.
abstract: We introduce the notion of the strongly correlated band insulator (SCI), where the lowest energy excitations are collective modes (excitons) rather than the single particles. We construct controllable 1/N expansion for SCI to describe their observable properties. A remarkable example of the SCI is bilayer graphene which is shown to be tunable between the SCI and usual weak coupling regime.
authors.affiliation: Physics Department, Lancaster University, Lancaster, United Kingdom.
authors.forename: V V
authors.initials: VV
authors.lastname: Cheianov
authors.forename: I L
authors.initials: IL
authors.lastname: Aleiner
authors.forename: V I
authors.initials: VI
authors.lastname: Fal'ko