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arXiv · 0905.4304

Strong terahertz response in bilayer graphene nanoribbons

A. R. Wright·J. C. Cao·C. Zhang
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Abstract

We reveal that there exists a class of graphene structures (a sub-class of bilayer graphene nanoribbons) which has unusually strong optical response in the terahertz (THz) and far infrared (FIR) regime. The peak conductance of terahertz/FIR active bilayer ribbons is around two orders of magnitude higher than the universal conductance of $e^2/4\hbar$ observed in graphene sheets. The criterion for the terahertz/FIR active sub-class is a bilayer graphene nanoribbon with one-dimensional massless Dirac Fermion energy dispersion near the $Γ$ point. Our results overcome a significant obstacle that hinders potential application of graphene in electronics and photonics.

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A. R. Wright, J. C. Cao, C. Zhang. 2009-05-26. Strong terahertz response in bilayer graphene nanoribbons. https://arxiv.org/abs/0905.4304

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