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. 2008 Mar 21;100(11):116804.
doi: 10.1103/PhysRevLett.100.116804. Epub 2008 Mar 21.

Nonlinear screening and ballistic transport in a graphene p-n junction

L M Zhang  1 , M M Fogler
Affiliations

Nonlinear screening and ballistic transport in a graphene p-n junction

L M Zhang et al. Phys Rev Lett. .

Abstract

We study the charge density distribution, the electric field profile, and the resistance of an electrostatically created lateral p-n junction in graphene. We show that the electric field at the interface of the electron and hole regions is strongly enhanced due to limited screening capacity of Dirac quasiparticles. Accordingly, the junction resistance is lower than estimated in previous literature.

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