Over-barrier side-band electron emission from graphene with a time-oscillating potential Original Research Article

We propose a model which describes side-band electron emission from vertically aligned monolayer graphene with an internal time-oscillating barrier and a static edge barrier. Our results show that electron emission is governed by the over-barrier emission process, which is dominated by the time-oscillating barrier. The emitted current line density J [nA/nm] is only dependent on the amplitude image and on the frequency image of the time-oscillating barrier, and is characterized by image. From the model, it is found that J is maximized at about image rad/s to image rad/s, and that J increases with image.