Metallic and insulating adsorbates on graphene
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 in 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 09, 2011
- Source ID
- 10.1063/1.3588035
Entities
People
- K. M. Mccreary
- K. Pi
- R. K. Kawakami
Organizations
- National Science Foundation
- Office of Naval Research
- University of California