Gate-controlled current switch in graphene

Sääskilahti, Kimmo; Harju, Ari; Pasanen, Pirjo
August 2009
Applied Physics Letters;8/31/2009, Vol. 95 Issue 9, p092104
Academic Journal
We numerically study cross conductances in a four-terminal all-graphene setup. We show that far away from the Dirac point, current flows along zigzag directions, giving the possibility to guide the current between terminals using a tunable pn-junction. The device operates as a gate-controlled current switch, and the electronic properties of graphene are crucial for efficient performance.


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