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Journal Articles

Probing the Coulomb interaction of PuCoGa$$_5$$ by phonon spectroscopy

Raymond, S.*; Piekarz, P.*; Sanchez, J. P.*; Serrano, J.*; Kirsch, M.*; Detlefs, B.*; Rebizant, J.*; Metoki, Naoto; Kaneko, Koji; Jochym, P. T.*; et al.

Journal of Alloys and Compounds, 444-445, p.104 - 108, 2007/10

https://doi.org/10.1016/j.jallcom.2006.09.053
 Times Cited Count：2 Percentile：20.36(Chemistry, Physical)

The phonon dispersion curves of the unconventional 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 theoretical description of the phonon spectrum is obtained only when a local Coulomb repulsion $$U{approx}$$3 eV among 5f electrons is taken into account. This implies partial localization of the 5f electrons in this compound. A comparison made with the phonon spectrum of UCoGa$$_5$$ suggests that the latter compound is better described with a fully itinerant f electrons model.

Journal Articles

Probing the coulomb interaction of the unconventional superconductor PuCoGa$$_5$$ by phonon spectroscopy

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

https://doi.org/10.1103/PhysRevLett.96.237003
 Times Cited Count：26 Percentile：73.29(Physics, Multidisciplinary)

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 ${it ab initio}$ lattice dynamics calculations. An accurate description of the phonon spectrum is obtained only when a local Coulomb repulsion U$${simeq}$$ 3 eV among 5$$f$$ electrons is taken into account.

Oral presentation

Phonon in ATGa$$_{5}$$(A:U, Pu)

Metoki, Naoto; Kaneko, Koji; Ikeda, Shugo; Matsuda, Tatsuma; Haga, Yoshinori; Onuki, Yoshichika; Raymond, S.*; Piekarz, P.*; Sanchez, J. P.*; Serrano, J.*; et al.

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no abstracts in English

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