Orbital Character Effects in the Photon Energy and Polarization Dependence of Pure C Photoemission.

Recent direct experimental observation of multiple highly dispersive C valence bands has allowed for a detailed analysis of the unusual photoemission traits of these features through photon energy- and polarization-dependent measurements. Previously obscured dispersions and strong photoemission traits are now revealed by specific light polarizations. The observed intensity effects prove the locking in place of the C molecules at low temperatures and the existence of an orientational order imposed by the substrate chosen.