Coulomb Drag and High Resistivity Behavior in Double Layer Graphene

Details Coulomb Drag and High Resistivity Behavior in Double Layer Graphene Coulomb Drag and High Resistivity Behavior in Double Layer Graphene

2011-05-26

arxiv.org/abs/1105.5399v2

EuroPhysics Letters, 95 18001 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

The version v2 has an extra figure as supplementary information

Scientific paper

10.1209/0295-5075/95/18001

We show that Coulomb drag in ultra-clean graphene double layers can be used for controlling the on/off ratio for current flow by tunning the external gate voltage. Hence, although graphene remains semi-metallic, the double layer graphene system can be tuned from conductive to a highly resistive state. We show that our results explain previous data of Coulomb drag in double layer graphene samples in disordered SiO2 substrates.

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