Abstract
Recently, mathematical analysis clarified that hybridized carbon should have a three-dimensional crystal structure () which can be regarded as a twin of the diamond crystal. In this study, various physical properties of the carbon crystal, especially for the electronic properties, were evaluated by first principles calculations. Although the crystal is in a metastable state, a possible pressure induced structural phase transition from graphite to was suggested. Twisted states across the Fermi level result in metallic properties in a new carbon crystal.
- Received 12 June 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.055703
©2009 American Physical Society