Graphene on boron-nitride: Moiré pattern in the van der Waals energy

  • M. Neek-Amal
    Department of Physics, University of Antwerpen 1 , Groenenborgerlaan 171, B-2020 Antwerpen, Belgium
  • F. M. Peeters
    Department of Physics, University of Antwerpen 1 , Groenenborgerlaan 171, B-2020 Antwerpen, Belgium

書誌事項

公開日
2014-01-27
DOI
  • 10.1063/1.4863661
公開者
AIP Publishing

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説明

<jats:p>The spatial dependence of the van der Waals (vdW) energy between graphene and hexagonal boron-nitride (h-BN) is investigated using atomistic simulations. The van der Waals energy between graphene and h-BN shows a hexagonal superlattice structure identical to the observed Moiré pattern in the local density of states, which depends on the lattice mismatch and misorientation angle between graphene and h-BN. Our results provide atomistic features of the weak van der Waals interaction between graphene and BN which are in agreement with experiment and provide an analytical expression for the size of the spatial variation of the weak van der Waals interaction. We also found that the A-B-lattice symmetry of graphene is broken along the armchair direction.</jats:p>

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