Skip to main content
eScholarship
Open Access Publications from the University of California

Electronic doping and scattering by transition metals on graphene

  • Author(s): Pi, K
  • McCreary, KM
  • Bao, W
  • Han, W
  • Chiang, YF
  • Li, Y
  • Tsai, SW
  • Lau, CN
  • Kawakami, RK
  • et al.
Abstract

We investigate the effects of transition metals (TM) on the electronic doping and scattering in graphene using molecular-beam epitaxy combined with in situ transport measurements. The room-temperature deposition of TM onto graphene produces clusters that dope n type for all TM investigated (Ti, Fe, and Pt). We also find that the scattering by TM clusters exhibits different behavior compared to 1/r Coulomb scattering. At high coverage, Pt films are able to produce doping that is either n type or weakly p type, which provides experimental evidence for a strong interfacial dipole favoring n -type doping as predicted theoretically. © 2009 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View