Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625802 | Journal of Alloys and Compounds | 2007 | 5 Pages |
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≈3U≈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.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
S. Raymond, P. Piekarz, J.P. Sanchez, J. Serrano, M. Krisch, B. Detlefs, J. Rebizant, N. Metoki, K. Kaneko, P.T. Jochym, A.M. Oleś, K. Parlinski,