Midgap states in corrugated graphene: First principles calculations
until further notice
online : arXiv
Number of pages
Display more detailsDisplay less details
Theory of Condensed Matter
SubjectTheory of Condensed Matter
We investigate the electronic properties of corrugated graphene by means of first principles theory and show how rippling-induced pseudomagnetic fields alter graphene's low-energy excitations. The formation of flat bands near the Fermi level corresponding to pseudo-Landau levels is studied quantitatively as a function of the rippling parameters. Especially, the zero-energy level gives rise to specific real space signatures like full sublattice polarization and related sublattice stripes observable in any experiment probing the local electronic structure. For guiding future experiments, we calculate the length scale, where these effects could be induced in a controlled manner by bonding of graphene to a rippled substrate. Finally, we give an estimate for the ripple analog to the strong diamagnetism of graphite - a quantum effect beyond the classical membrane treatment of graphene.
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.