Third edge for a graphene nanoribbon: A tight-binding model calculation

Details Third edge for a graphene nanoribbon: A tight-binding model calculation Third edge for a graphene nanoribbon: A tight-binding model calculation

2010-08-06

arxiv.org/abs/1008.1211v2

Phys. Rev. B 83, 155436 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures. Two new figures and a few references added

Scientific paper

The electronic and transport properties of an extended linear defect embedded in a zigzag nanoribbon of realistic width are studied, within a tight binding model approach. Our results suggest that such defect profoundly modify the properties of the nanoribbon, introducing new conductance quantization values and modifying the conductance quantization thresholds. The linear defect along the nanoribbon behaves as an effective third edge of the system, which shows a metallic behavior, giving rise to new conduction pathways that could be used in nanoscale circuitry as a quantum wire.

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