Abstract
A directional photon-assisted resonant chiral tunneling through a bilayer graphene barrier isconsidered. An external electromagnetic field applied to the barrier switches the transparencyT in the longitudinal direction from its steady state valueT = 0 to theideal T = 1 at no energy costs. The switch happens because the ac field affects the phase correlationbetween the electrons and holes inside the graphene barrier, changing the whole angulardependence of the chiral tunneling (directional photoelectric effect). The suggestedphenomena can be implemented in relevant experiments and in various sub-millimeter andfar-infrared optical electronic devices.
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