Theory of valence-band and core-level photoemission from plutonium   dioxide
  The correlated-band theory implemented as a combination of the local-density approximation with the dynamical mean-field theory is applied to PuO2. An insulating electronic structure, consistent with the experimental valence-band photoemission spectra, is obtained. The calculations yield a nonmagnetic ground state that is characterized by a noninteger filling of the plutonium 5f shell. The noninteger filling as well as the satellites appearing in the 4f core-level photoemission spectra originate in a sizable hybridization of the 5f shell with the 2p states of oxygen. 
Jindrich Kolorenc, Agnieszka L. Kozub, and Alexander B. Shick
cond-mat.str-el cond-mat.mtrl-sci