Bulk-sensitive Photoemission of Mn5Si3

TL;DR

This study uses bulk-sensitive high-resolution photoemission to analyze Mn5Si3, revealing site-specific features in Mn core levels and confirming theoretical valence band predictions.

Contribution

It provides detailed experimental insights into the electronic structure of Mn5Si3, especially the site-specific core level spectra and validation of band calculations.

Findings

Mn core levels deconvoluted into two crystallographic site components

Noticeable asymmetry in Mn core level spectra

Valence band peaks match theoretical predictions

Abstract

We have carried out a bulk-sensitive high-resolution photoemission experiment on Mn5Si3. The measurements are performed for both core level and valence band states. The Mn core level spectra are deconvoluted into two components corresponding to different crystallographic sites. The asymmetry of each component is of noticeable magnitude. In contrast, the Si 2p spectrum shows a simple Lorentzian shape with low asymmetry. The peaks of the valence band spectrum correspond well to the peak positions predicted by the former band calculation.