Correspondence on "Electronic correlations in the iron pnictides"

TL;DR

This paper discusses potential reasons for discrepancies in electronic property measurements of LaFePO, highlighting the roles of mass renormalization and DFT inaccuracies in band position calculations.

Contribution

It emphasizes the importance of considering both many-body effects and computational inaccuracies when analyzing electronic properties of iron pnictides.

Findings

Discrepancy in Drude weight measurements may be due to multiple factors.

DFT inaccuracies can affect the relative band positions.

Mass renormalization alone may not explain all observed differences.

Abstract

I point out that the observed discrepancy between the measured and calculated Drude weights in LaFePO may be caused not only by mass renormalization, but also by a DFT inaccuracy in determining the relative positions of the hole and electron band.