Suppressing Klein tunneling in graphene using a one-dimensional array of localized scatterers.

ABSTRACT: Graphene's unique physical and chemical properties make it an attractive platform for use in micro- and nanoelectronic devices. However, electrostatically controlling the flow of electrons in graphene can be challenging as a result of Klein tunneling, where electrons normally incident to a one-dimensional potential barrier of height V are perfectly transmitted even as V → ∞. In this study, theoretical and numerical calculations predict that the transmission probability for an electron wave normally incident to a one-dimensional array of localized scatterers can be significantly less than unity when the electron wavelength is smaller than the spacing between scatterers. In effect, placing periodic openings throughout a potential barrier can, somewhat counterintuitively, decrease transmissio

SUBMITTER: Walls JD 

PROVIDER: S-EPMC4327422 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature