Nature of the Resonant 6-eV Satellite in Ni: Photoelectron Spin-Polarization Analysis

Abstract

Spin-polarized, energy-resolved photoemission using monochromatized synchrotron radiation shows that the 6-eV satellite of Ni is highly spin polarized near to the $3p\ensuremath{-}3d$ excitation threshold ($h\ensuremath{\nu}\ensuremath{\approx}65$ eV). This observation proves the validity of the model involving ${M}_{2,3}{M}_{4,5}{M}_{4,5}$ Auger transitions with final localized two-hole bound states and rules out explanations within a one-electron band picture.