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http://publications.jrc.ec.europa.eu/repository/handle/JRC40070| Title: | Probing the Coulomb Interaction of PuCoGa5 by Phonon Spectroscopy |
| Authors: | RAYMOND S.; PIERKARZ P.; SANCHEZ J.-P.; SERRANO J.; KRISCH M.; DETLEFS B.; REBIZANT JEAN; METOKI N.; KANEKO K.; JOCHYM P.; OLES A.; PARLINSKI K. |
| Citation: | JOURNAL OF ALLOYS AND COMPOUNDS vol. 444-445 p. 104-108 |
| Publisher: | ELSEVIER SCIENCE SA |
| Publication Year: | 2007 |
| JRC N°: | JRC40070 |
| ISSN: | 0925-8388 |
| URI: | http://publications.jrc.ec.europa.eu/repository/handle/JRC40070 |
| Type: | Articles in periodicals and books |
| Abstract: | The phonon dispersion curves of the unconventional superconductor PuCoGa5 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 ¿ 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 UCoGa5 suggests that the latter compound is better described with a fully itinerant f electrons model. |
| JRC Directorate: | Nuclear Safety and Security |
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