Comments on Phonon and magnetic structure in {delta}-plutonium from density-functional theory by P. Soderlind et al

In their recent paper [Soderlind, P. et al., Sci. Rep. 5, 15958 (2015)], Soderlind 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. Soderlind 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.