Electron Tunneling in Monolayer and Bilayer Graphene

Wu, Di; Chen, Weiqiang; Zhang, Fu-Chun

Electron Tunneling in Monolayer and Bilayer Graphene

Authors

Wu, Di

Chen, Weiqiang

Zhang, Fu-Chun

Description

Electron's tunneling through potential barrier in monolayer and bilayer graphene lattices is investigated by using full tight-binding model. Emphasis is placed on the resonance tunneling feature and inter-valley scattering probability. It is shown that normal incidence transmission probabilities for monolayer and bilayer graphene exhibit different properties. Our calculation indicates that valleytronics in graphene systems may be detected, generated and controlled by changing the structure parameters of the external electric potential.
11 pages, 8 figures