Comments on 'Phonon and magnetic structure in {\delta}-plutonium from density-functional theory' by P. S\"oderlind et al

TL;DR

This paper critiques a previous study on delta-plutonium, focusing on the magnetic structure aspect, highlighting that the original comparison with experimental data overlooked key experimental facts.

Contribution

It provides a critical commentary on the interpretation of neutron spectroscopy data in the context of DFT calculations for delta-plutonium's magnetic structure.

Findings

Highlights overlooked experimental facts in neutron spectroscopy data

Questions the validity of previous DFT-based magnetic form factor comparisons

Emphasizes the need for comprehensive analysis of experimental data

Abstract

In their recent paper [S\"oderlind, P. et al., Sci. Rep. 5, 15958 (2015)], S\"oderlind et al. discuss two subjects from a theoretical point of view: the phonon spectra and the possible magnetic structure of {\delta}-plutonium (Pu). Here, we comment on the second subject. S\"oderlind et al. compare the Pu magnetic form factor F(Q) calculated via density functional theory (DFT) with measurements of F(Q) by neutron spectroscopy [Janoschek, M. et al., Sci. Adv. 1, e1500188 (2015)]. In particular, this comparison does not consider a number of experimental facts established in the neutron spectroscopy study.