Quantum Hall edge states under periodic driving: a Floquet induced chirality switch
A. Huamán,
L. E. F. Foa Torres,
C. A. Balseiro
et al.
Abstract:We report on the fate of the quantum Hall effect in graphene under strong laser illumination. By using Floquet theory combined with both a low energy description and full tight-binding models, we clarify the selection rules, the quasienergy band structure, as well as their connection with the two-terminal and multi-terminal conductance in a device setup as relevant for experiments. We show that the well-known dynamical gaps that appear in the Floquet spectrum at ± Ω/2 lead to a switch-off of the quantum Hall e… Show more
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