Transport properties of graphene in the high-current limit.
We present a detailed study of the high-current transport properties of graphene devices patterned in a four-point configuration. The current tends to saturate as the voltage across graphene is increased but never reaches the complete saturation as in metallic nanotubes. Measurements are compared to a model based on the Boltzmann equation, which includes electron-scattering processes due to charged and neutral impurities, and graphene optical phonons. The saturation is incomplete because of the competition between disorder and optical phonon scattering.
CIN2(CSIC-ICN), Campus UAB, Barcelona E-08193, Spain.
Amelia
A
Barreiro
Michele
M
Lazzeri
Joel
J
Moser
Francesco
F
Mauri
Adrian
A
Bachtold