Metallic and Insulating Adsorbates on Graphene

K. M. McCreary; K. Pi; R. K. Kawakami

doi:10.1063/1.3588035

Metallic and Insulating Adsorbates on Graphene

Materials Science 2011-05-18 v1 Other Condensed Matter

Authors: K. M. McCreary , K. Pi , R. K. Kawakami

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We directly compare the effect of metallic titanium (Ti) and insulating titanium dioxide (TiO2) on the transport properties of single layer graphene. The deposition of Ti results in substantial n-type doping and a reduction of graphene mobility by charged impurity scattering. Subsequent exposure to oxygen largely reduces the doping and scattering by converting Ti into TiO2. In addition, we observe evidence for short-range scattering by TiO2 impurities. These results illustrate the contrasting scattering mechanisms for identical spatial distributions of metallic and insulating adsorbates.

Cite

@article{arxiv.1104.5289,
  title  = {Metallic and Insulating Adsorbates on Graphene},
  author = {K. M. McCreary and K. Pi and R. K. Kawakami},
  journal= {arXiv preprint arXiv:1104.5289},
  year   = {2011}
}

Related papers

View all related →