Investigation of the electronic band structure of gold by means of spin-polarized photoelectrons

Abstract

The light-induced spin polarization of photoelectrons from Au(111) and Au(111) + K is calculated within a spin-dependent three-step model of photoemission. The comparison of experimental and theoretical data for several different values of the work function $\Phi$ shows that one may obtain a satisfactory agreement between theory and experiment for all $\Phi$, if one assumes an upshift in energy by 1.1-1.5 eV for low-lying unoccupied relativistic augmented-plane-wave bands.