title: Probing the coulomb interaction of the unconventional superconductor by phonon spectroscopy.
abstract: The phonon dispersion curves of the superconductor PuCoGa(5) were studied by inelastic x-ray scattering at room temperature. The experimental data agree well with ab initio lattice dynamics calculations. An accurate description of the phonon spectrum is obtained only when a local Coulomb repulsion U approximately equal 3 eV among 5f electrons is taken into account.
authors.affiliation: CEA-DSM/Département de Recherche Fondamentale sur la Matière Condensée/SPSMS, 38054 Grenoble, France.
authors.forename: S
authors.initials: S
authors.lastname: Raymond
authors.forename: P
authors.initials: P
authors.lastname: Piekarz
authors.forename: J P
authors.initials: JP
authors.lastname: Sanchez
authors.forename: J
authors.initials: J
authors.lastname: Serrano
authors.forename: M
authors.initials: M
authors.lastname: Krisch
authors.forename: B
authors.initials: B
authors.lastname: Janousová
authors.forename: J
authors.initials: J
authors.lastname: Rebizant
authors.forename: N
authors.initials: N
authors.lastname: Metoki
authors.forename: K
authors.initials: K
authors.lastname: Kaneko
authors.forename: P T
authors.initials: PT
authors.lastname: Jochym
authors.forename: A M
authors.initials: AM
authors.lastname: Oleś
authors.forename: K
authors.initials: K
authors.lastname: Parlinski