Color-Dependent Conductance of Graphene with Adatoms
Abstract
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2011
- DOI:
- 10.1103/PhysRevLett.106.166806
- arXiv:
- arXiv:1011.4048
- Bibcode:
- 2011PhRvL.106p6806S
- Keywords:
-
- 72.80.Vp;
- 73.22.-f;
- 73.63.-b;
- Electronic structure of nanoscale materials: clusters nanoparticles nanotubes and nanocrystals;
- Electronic transport in nanoscale materials and structures;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Disordered Systems and Neural Networks;
- Condensed Matter - Materials Science
- E-Print:
- 4 pages, 4 figures