Color-dependent conductance of graphene with adatoms

Details Color-dependent conductance of graphene with adatoms Color-dependent conductance of graphene with adatoms

2010-11-17

arxiv.org/abs/1011.4048v1

Phys. Rev. Lett. 106, 166806 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.106.166806

We study ballistic transport properties of graphene with a low concentration of vacancies or adatoms. The conductance of graphene doped to the Dirac point is found to depend on the relative distribution of impurities among different sites of the honeycomb lattice labeled in general by six colors. The conductivity is shown to be sensitive to the crystal orientation if adatom sites have a preferred color. Our theory is confirmed by numerical simulations using recursive Green's functions with no adjustable parameters.

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