Generation of valley polarized current in bilayer graphene

Details Generation of valley polarized current in bilayer graphene Generation of valley polarized current in bilayer graphene

2009-05-27

arxiv.org/abs/0905.4522v2

Applied Physics Letters 95, 062107 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 colour figures. Published version. Journal reference is Applied Physics Letters 95, 062107 (2009)

Scientific paper

10.1063/1.3205117

We propose a device for the generation of valley polarized electronic current in bilayer graphene. By analyzing the response of this material to intense terahertz frequency light in the presence of a transverse electric field, we demonstrate that dynamical states are induced in the gapped energy region, and if the system parameters are properly tuned, these states exist only in one valley. The valley polarized states can then be used to filter an arbitrary electron current, so generating a valley polarized current.

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