Electronic Structure of PuCoGa$_{5}$ and PuSb$_{2}$ Using Angle-Resolved Photoemission

The Electronic structure of PuCoGa$_{5}$ and PuSb2 is investigated using angle-resolved photoemission (ARPES). Details of the sharp quasiparticle peak at the Fermi energy are presented giving insight into the details of the mechanisms which give rise to strongly correlated characteristics in these materials. Additionally, the details of the dual nature of the 5f electrons are explored via characterization of more localized 5f states well removed from the Fermi energy. The ARPES data is compared with electronic structure models which move beyond the density functional theory approach to address the strong electron correlations present in Pu compounds as well as the dual nature of the 5f electrons.