“…They are also the most relevant systems for applications and, as a consequence, are the most studied actinide oxide compounds, both experimentally and theoretically. [9,11,33,35,37,39,40,41,42,43,44,45,46,47,48,49,50] On the experimental side, a comprehensive summary of their electronic, magnetic, transport and optical properties can be found in Troć et al. [48] The absence of features at the Fermi level in the observed XPS spectra [35] indicates that all the dioxides are semiconductors or insulators.…”