Valence-Band Structure of NaCl along the Δ-Direction Determined by Angle-Resolved Photoemission

Abstract

By use of synchrotron radiation of 40≤hν≤110 eV, angle-resolved photoemission spectroscopy (ARPES) is applied to NaCl single-crystals to investigate the electronic structure of the valence band. It is recognized that the results obtained can be well understood by the direct-transition model, and the ARPES is found very useful in determination of the energy vs momentum dispersion relation. The valence band dispersion of NaCl is determined along the Δ-direction (Γ−X).