Top view of the schema (a) and the Dirac point potential profile (b) of a typical two-terminal graphene system of width much larger than the length , . The slashed lines illustrate the linear dispersion law of charges around the -points. The Fermi level (blue dashed line) can be externally changed by an applied voltage.
Conductivity as a function of Fermi energy for different values of the impurity density for two scattering mechanisms: (a) with vacancies, (b) and (c) with weakly/fully screened Coulomb ones. Insets show the real and imaginary parts of the self-energies.
Charge mobility extracted for the ballistic transport regime (yellow solid curve), for the fully (red dashed curve) and weakly (gross-blue dot-dashed curve) screened Coulomb, and vacancy (blue solid curve) scattering mechanisms.
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