We propose a class of networks which can be regarded as an extension of the graphitic network. These networks are constructed so that surface states with non-bonding character (edge states) are formed in a tight-binding model with one orbital for each atomic site. Besides, for several networks, the tight-binding electronic structures become a zero-gap semiconductor. These properties have been found in the π-electron system of the graphene. Thus, we call these networks hypergraphite.
@article{arxiv.cond-mat/0001027,
title = {The Hypergraphite: A possible extension of graphitic network},
author = {Y. Takagi and M. Fujita and K. Wakabayashi and M. Igami and S. Okada and K. Nakada and K. Kusakabe},
journal= {arXiv preprint arXiv:cond-mat/0001027},
year = {2007}
}