The structural phase transition and loss of magnetic moments in NpO2: ab initio approach to the crystal and mean field

A. V. Nikolaev, K. H. Michel

We discuss the triple-${\vec{q}}^X$ structures for the ordered cubic phase of NpO${}_2$, which are $Pn\bar{3}m$ and $Pa\bar{3}$. A special care should be taken to discriminate betwee…