Carbon is known to exist in three basic allotropes depending on the hybridization of s and p orbitals: diamond, graphite/graphene/fullerenes, and carbyne. Here, a fourth carbon allotrope with a face-centered cubic crystal lattice and peculiar hybridization of atoms is obtained in the form of epitaxial films on diamond, showing an ultra-wide bandgap and semiconductor electronic behavior.
- Igor Konyashin
- Ruslan Muydinov
- Nicola Palmer
