New metallic carbon crystal

Masahiro Itoh, Motoko Kotani, Hisashi Naito, Toshikazu Sunada, Yoshiyuki Kawazoe, Tadafumi Adschiri

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)

Abstract

Recently, mathematical analysis clarified that sp2 hybridized carbon should have a three-dimensional crystal structure (K4) which can be regarded as a twin of the sp3 diamond crystal. In this study, various physical properties of the K4 carbon crystal, especially for the electronic properties, were evaluated by first principles calculations. Although the K4 crystal is in a metastable state, a possible pressure induced structural phase transition from graphite to K4 was suggested. Twisted π states across the Fermi level result in metallic properties in a new carbon crystal.

Original languageEnglish
Article number055703
JournalPhysical review letters
Volume102
Issue number5
DOIs
Publication statusPublished - 2009 Feb 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'New metallic carbon crystal'. Together they form a unique fingerprint.

Cite this