Modulation of electronic density in waved graphite layers

We present a theoretical investigation of electronic density distribution in waved graphene and graphite with layers repeatedly deformed along the zigzag or armchair directions. Effect of deformation on the band structure of graphene and graphite was examined using density functional theory. It was found that the density of states depends sensitively on the position of carbon atom on the curved surface of graphene. Strong localization of electrons on the top and bottom parts of armchair-edged deformed graphene produces conduction channels along the wave crest. Zigzag-edged waved graphene can possess metallic or semiconducting behavior. Interlayer interaction in waved graphite results in smoothing of anisotropy of local density of states. Hence, optical and electrical properties of corrugated graphite materials can be controlled by changing the bending direction, out-of plane bending height and interlayer separation.