Resonant interatomic Auger transition in chalcopyrite CuInSe2

TL;DR

This paper investigates resonant interatomic Auger transitions in CuInSe2, revealing how Coulomb interactions and electron shake-up effects enhance Auger spectra, with both theoretical and experimental insights.

Contribution

It provides a combined theoretical and experimental analysis of resonant interatomic Auger transitions in chalcopyrite CuInSe2, highlighting the role of Coulomb interactions and electron shake-up effects.

Findings

Resonant enhancement of Auger spectra due to Coulomb transitions.

Observation of interatomic Auger transitions involving high-lying levels.

Experimental confirmation of theoretical predictions in CuInSe2.

Abstract

The interatomic Auger transitions in compounds containing atomic components with core levels close in energy are studied theoretically and experimentally. The Coulomb transitions of a hole between such levels lead to a resonant enhancement of the Auger spectra (with respect to the energy difference between the levels). Interatomic Auger transitions involving high lying levels are formed by shaking up electrons due to the dynamic field of photo holes produced during the transition. These effects were observed experimentally in XPS and Auger spectra of CuInSe2 type materials.