Tailoring Graphene with Metals on Top

Abstract

We study the effects of metallic doping on the electronic properties of graphene using density functional theory in the local density approximation in the presence of a local charging energy (LDA+U). The electronic properties are sensitive to whether graphene is doped with alkali or transition metals. We estimate the the charge transfer from a single layer of Potassium on top of graphene in terms of the local charging energy of the graphene sheet. The coating of graphene with a non-magnetic layer of Palladium, on the other hand, can lead to a magnetic instability in coated graphene due to the hybridization between the transition-metal and the carbon orbitals.

5 pages, 4 figures

References in corpus (5)

• Electric Field Effect in Atomically Thin Carbon Films
• Unconventional Integer Quantum Hall effect in graphene
• Bipolar supercurrent in graphene
• Veselago Lens for Electrons: Focusing and Caustics in Graphene p-n Junctions
• Density functional study of alkali metal atoms and monolayers on graphite (0001)

Cited by in corpus (7)

• The electronic properties of graphene
• Doping graphene with metal contacts
• Edge-functionalized and substitutional doped graphene nanoribbons: electronic and spin properties
• Metal to insulator transition in epitaxial graphene induced by molecular doping
• Formation of atomic nanoclusters on graphene sheets
• Energy gap opening in submonolayer lithium on graphene: Local density functional and tight-binding calculations
• Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions