Prediction of a pure-carbon planar covalent metal

Vincent H. Crespi, Lorin X. Benedict, Marvin L. Cohen, Steven G. Louie

Research output: Contribution to journalArticlepeer-review

255 Scopus citations


Carbon is well-known as an insulator, a semimetal, a molecular solid, and a one-dimensional semiconductor or low-density-of-states metal. We propose a pure-carbon planar structure composed of pentagons and heptagons that is metallic with a density of states at the Fermi level of ∼0.1 state per eV per atom. This structure, planar carbon pentaheptite, is metastable with a total energy per carbon atom comparable to that of (Formula presented). The structure can be rolled into tubes in a manner similar to graphite. Possible synthetic pathways are discussed.

Original languageEnglish (US)
Pages (from-to)R13303-R13305
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number20
StatePublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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