A Possible Superstructure: Hyper Graphite

We have shown a theoretical method to construct structures called “hyper-graphite” which can be regarded as a generalization of the graphite structure. Based on the method, we propose a possible 3-dimensional network, which may be realized as a π-electron system of hydro-carbon. Naturally, localized edge states emerge at the Fermi level similar to the zigag-edged graphite sheet.