Dynamically assisted tunneling in the Floquet picture

D Ryndyk, C Kohlfürst, F Queisser, R Schützhold - Physical Review Research, 2024 - APS
We study how tunneling through a potential barrier V (x) can be enhanced by an additional
harmonically oscillating electric field E (t)= E 0 cos (ω t) or a similar oscillating force. To this …

Single-parameter pumping in graphene

P San-Jose, E Prada, S Kohler, H Schomerus - Physical Review B …, 2011 - APS
We propose a quantum pump mechanism based on the particular properties of graphene,
namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes …

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

SJ Liang, S Sun, LK Ang - Carbon, 2013 - Elsevier
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 …

Electron over-barrier emission mechanism of single layer graphene

S Liang, LK Ang - 2013 IEEE 14th International Vacuum …, 2013 - ieeexplore.ieee.org
We propose a model which describes the sideband electrons emission from a vertically
aligned monolayer graphene with an internal time-oscillating barrier and static surface …