Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3588035
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Funding
- ONR [N00014-09-1-0117]
- NSF [DMR-1007057, MRSEC DMR-0820414]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [820414] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1007057] Funding Source: National Science Foundation
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We directly compare the effect of metallic titanium (Ti) and insulating titanium dioxide (TiO(2)) on the transport properties of single layer graphene. The deposition of Ti results in substantial n-type doping and a reduction in graphene mobility by charged impurity scattering. Subsequent exposure to oxygen largely reduces the doping and scattering by converting Ti into TiO(2). In addition, we observe evidence for short-range scattering by TiO(2) impurities. These results illustrate the contrasting scattering mechanisms for identical spatial distributions of metallic and insulating adsorbates. (C) 2011 American Institute of Physics. [doi:10.1063/1.3588035]
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