Angle-resolved photoemission and secondary electron emission from single-crystal graphite

Abstract
Angle-resolved photoemission from a single crystal of natural graphite is reported for the first time. The absence of turbostratic disorder allows unambiguous determination of the valence-band dispersions in the two principal symmetry directions. Other features observed in photoemission, and in electron-excited angle-resolved secondary electron emission, are attributed to conduction-band states, and allow conduction-band dispersions to be measured directly.