title: 5f-electron localization in PuSe and PuSb
abstract: Thin layers of PuSb and PuSe were studied by photoelectron spectroscopy. X-ray photoelectron spectroscopy and high-resolution valence-band ultraviolet photoelectron spectroscopy spectra show localization of the 5f states and a low density of states at E(F) in PuSb. In PuSe, which can be classified as a heavy fermion system with low carrier density, we observed three narrow peaks in the valence band, which can be related to the 5f emission. These three features are very sensitive to stoichiometry deviations and disappear for PuSe prepared at T = 77 K.
authors.affiliation: European Commission, Joint Research Centre, Institute for Transuranium Elements, Post Box 2340, D-76175 Karlsruhe, Germany.
authors.initials: T
authors.lastname: Gouder
authors.initials: F
authors.lastname: Wastin
authors.initials: J
authors.lastname: Rebizant
authors.initials: L
authors.lastname: Havela