title: Electric-dipole-induced universality for Dirac fermions in graphene.
abstract: We study electric dipole effects for massive Dirac fermions in graphene and related materials. The dipole potential accommodates towers of infinitely many bound states exhibiting a universal Efimov-like scaling hierarchy. The dipole moment determines the number of towers, but there is always at least one tower. The corresponding eigenstates show a characteristic angular asymmetry, observable in tunnel spectroscopy. However, charge transport properties inferred from scattering states are highly isotropic.
authors.affiliation: Department of Mathematics, City University London, London EC1V 0HB, United Kingdom.
authors.forename: Alessandro
authors.initials: A
authors.lastname: De Martino
authors.affiliation: Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
authors.forename: Denis
authors.initials: D
authors.lastname: Klöpfer
authors.affiliation: Turin Polytechnic University in Tashkent, 17 Niyazov Street, 100095 Tashkent, Uzbekistan.
authors.forename: Davron
authors.initials: D
authors.lastname: Matrasulov
authors.affiliation: Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
authors.forename: Reinhold
authors.initials: R
authors.lastname: Egger