Atomic structure of graphene on SiO2.

  title={Atomic structure of graphene on SiO2.},
  author={Masa Ishigami and J. H. Chen and William G. Cullen and Michael S. Fuhrer and Ellen D. Williams},
  journal={Nano letters},
  volume={7 6},
We employ scanning probe microscopy to reveal atomic structures and nanoscale morphology of graphene-based electronic devices (i.e., a graphene sheet supported by an insulating silicon dioxide substrate) for the first time. Atomic resolution scanning tunneling microscopy images reveal the presence of a strong spatially dependent perturbation, which breaks the hexagonal lattice symmetry of the graphitic lattice. Structural corrugations of the graphene sheet partially conform to the underlying… 

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