Transport properties of graphene in the high-current limit

Details Transport properties of graphene in the high-current limit Transport properties of graphene in the high-current limit

2009-05-31

arxiv.org/abs/0906.0188v1

Phys. Rev. Lett. 103 (2009), 076601.

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

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.

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