Scattering Resonances in bilayer graphene

We present density functional calculation of the empty states of graphene singleand bi-layer. Particular attention is given to the recently discovered scattering resonances of graphene. When two layers are assembled, these states hybridize, giving rise to more complex states that are strongly localized in the interlayer regions. These states are at the origin of bands of graphite that show a pronounced dispersion in the direction perpendicular to the planes and have been observed over decades in experiments.