Cuprate core level line shapes for different Cu-O networks

TL;DR

This paper investigates how the core level photoemission spectra of copper in cuprates vary with different Cu-O network structures, valencies, and dimensionalities, linking spectral shapes to electronic structure and atomic contributions.

Contribution

It applies the Anderson impurity model to diverse cuprate structures, providing detailed insights into spectral shapes and their relation to electronic and atomic configurations.

Findings

Good agreement with experimental spectra achieved

Spectral shape linked to valence electronic structure

Other atoms influence the core level spectra

Abstract

We have studied the Cu core level photoemission spectra in the Anderson impurity model for cuprates with different Cu-O networks, dimensionalities (zero, one, two and three) and Cu valencies (two and three). We focus on the shape of the leading peak and obtain very good agreement with the experimental data. We show how the shape of the spectrum is related to the valence electronic structure and the Cu-O network but also that other atoms can play a role.