Spin-Dependent Final-State Interactions in Core Photoelectron Spectra of Metals with Incomplete Shell. I

Abstract

The interplay of the local and band characters in the core photoelectron spectra of metals with incomplete shell (represented by d ) has been studied by taking into account the spin-dependent interactions; (i) the exchange coupling between the localized d -electron and the core-hole in the final state, and (ii) the Coulomb repulsion between the d -electrons with opposite spins in the initial and final states. These interactions compete with the kinetic energy in the conduction band (denoted by s ) through the s - d mixing interaction. The core- d triplet and singlet states as well as the vacant and doubly occupied d -states manifest themselves, as final states, with various characteristic line-shapes such as the singular edge, the lifetime broadened Lorentzian peak or step, depending on their relative positions. Overall photoelectron spectra were obtained for three typical cases of the initial and final d -levels.