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arXiv · 0706.1237

Tailoring Graphene with Metals on Top

B. Uchoa·C. -Y. Lin·A. H. Castro Neto
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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.

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B. Uchoa, C. -Y. Lin, A. H. Castro Neto. 2008-01-17. Tailoring Graphene with Metals on Top. https://doi.org/10.1103/physrevb.77.035420

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