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Electric-Dipole-Induced Universality for Dirac Fermions in Graphene

Alessandro De MartinoDepartment of Mathematics, City University London, London EC1V 0HB, United KingdomDenis KlöpferInstitut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, GermanyD. U. MatrasulovTurin Polytechnic University in Tashkent, 17 Niyazov Street, 100095 Tashkent, UzbekistanReinhold EggerInstitut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany

Physical Review Lettersjournal2014en

ABI

Annotatsiya

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.

Mavzular

Graphene research and applications Topological Materials and Phenomena Quantum and electron transport phenomena

Identifikatorlar

DOI: 10.1103/physrevlett.112.186603

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