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Raymond, S.*; Piekarz, P.*; Sanchez, J. P.*; Serrano, J.*; Kirsch, M.*; Janousova, B.*; Rebizant, J.*; Metoki, Naoto; Kaneko, Koji; Jochym, P. T.*; et al.
Physical Review Letters, 96(23), p.237003_1 - 237003_4, 2006/06
Times Cited Count:26 Percentile:74.45(Physics, Multidisciplinary)The phonon dispersion curves of the superconductor PuCoGa were studied by inelastic X-ray scattering at room temperature. The experimental data agree well with lattice dynamics calculations. An accurate description of the phonon spectrum is obtained only when a local Coulomb repulsion U 3 eV among 5 electrons is taken into account.
Kuzushita, Kaori*; Ishii, Kenji; Wilkins, S. B.*; Janousova, B.*; Inami, Toshiya; Owada, Kenji; Tsubota, Masami; Murakami, Yoichi; Kaneko, Koji; Metoki, Naoto; et al.
Physical Review B, 73(10), p.104431_1 - 104431_5, 2006/03
Times Cited Count:8 Percentile:38.37(Materials Science, Multidisciplinary)We report a resonant X-ray scattering study of antiferromagnetic uranium compounds UGa (=Ni, Pd, and Pt) at the Ga -edge. A large resonant signal is observed below the Nel temperatures. The azimuth dependence in both - and - polarization channels establishes that the resonant signal has the symmetry of the magnetic dipole. This resonance with the band electrons is interpreted within a semi-localized model as an orbital polarization of the Ga states induced through strong hybridization with U valence level. These results demonstrate that resonant magnetic X-ray scattering at the anions, taken in combination with symmetry arguments, can be used to determine the configuration of the U moments and provide information about the hybridization.
Metoki, Naoto; Kaneko, Koji; Ikeda, Shugo; Matsuda, Tatsuma; Haga, Yoshinori; Onuki, Yoshichika; Raymond, S.*; Piekarz, P.*; Sanchez, J. P.*; Serrano, J.*; et al.
no journal, ,
no abstracts in English
Janousova, B.*; Di Matteo, S.*; Wilkins, S. B.*; Caciuffo, R.*; Paixo, J. A.*; Honda, Fuminori; Metoki, Naoto; Colineau, E.*; Lander, G. H.
no journal, ,
no abstracts in English