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Robustness of the optical-conductivity sum rule in Bilayer Graphene
L. Benfatto, S. G. Sharapov, J. P. Carbotte
We calculate the optical sum associated with the in-plane conductivity of a graphene bilayer. A bilayer asymmetry gap generated in a field-effect device can split apart valence and…
Magneto-optical conductivity in Graphene
V. P. Gusynin, S. G. Sharapov, J. P. Carbotte
Landau level quantization in graphene reflects the Dirac nature of its quasiparticles and has been found to exhibit an unusual integer quantum Hall effect. In particular the lowest…
Sum Rules for the Optical and Hall Conductivity in Graphene
V. P. Gusynin, S. G. Sharapov, J. P. Carbotte
Graphene has two atoms per unit cell with quasiparticles exhibiting the Dirac-like behavior. These properties lead to interband in addition to intraband optical transitions and mod…