Bulk sensitive photo emission spectroscopy of C1b compounds

TL;DR

This study demonstrates that high energy photoelectron spectroscopy effectively probes the bulk electronic structure of C1b compounds, with experimental results aligning well with theoretical calculations, highlighting its advantages over low energy XPS.

Contribution

It provides experimental evidence that high energy photoelectron spectroscopy offers improved bulk sensitivity for C1b compounds compared to traditional low energy methods.

Findings

High energy spectra match LDA calculations.

Bulk electronic structure is better revealed at high energies.

Spectroscopy performed at BESSY II beamline.

Abstract

This work reports about bulk-sensitive, high energy photoelectron spectroscopy from the valence band of CoTiSb excited by photons from 1.2 to 5 keV energy. The high energy photoelectron spectra were taken at the KMC-1 high energy beamline of BESSY II employing the recently developed Phoibos 225 HV analyser. The measurements show a good agreement to calculations of the electronic structure using the LDA scheme. It is shown that the high energy spectra reveal the bulk electronic structure better compared to low energy XPS spectra.