Abstract
The recently predicted interlayer state in graphite is observed, using synchrotron radiation excited photoemission constant-final-state spectroscopy on a single crystal of natural graphite, to lie where calculated in a recent theoretical band structure already known to give good agreement with the experimental band structure determined by angle-resolved photoemission. This result highlights discrepancies between photoemission and inverse photoemission over the position of conduction band features in graphite.