Answers are grounded in this paper and cite their sources.
Full-potential self-consistent linearized augmented-plane-wave calculations for hexagonal boron nitride show the existence of unoccupied interlayer states similar to those found in pure and intercalated graphite. Furthermore, in contradiction to the currently accepted picture, the resulting energy-band structure indicates that hexagonal BN is an indirect-gap insulator.
No takes yet. Share an insight, caveat, or question.
Catellani et al. (1985) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: