2026-04-27T21:40:10Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/653112025-02-13T09:51:44Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

Probing the Coulomb interaction of PuCoGa5 by phonon spectroscopy Raymond, S. Piekarz, P. Sanchez, J.P. Krisch, M. Detlefs, B. Rebizant, J. Metoki, N. Kaneko, K. Jochym, P.T. Oleś, A.M. Parlinski, K. Serrano Gutiérrez, Jorge 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 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 UCoGa5 suggests that the latter compound is better described with a fully itinerant f electrons model. 2024-01-30T12:06:42Z 2024-01-30T12:06:42Z 2007 info:eu-repo/semantics/article Journal of Alloys and Compounds 444–445 (2007) 104–108 0925-8388 https://uvadoc.uva.es/handle/10324/65311 10.1016/j.jallcom.2006.09.053 104 108 Journal of Alloys and Compounds 444-445 eng info:eu-repo/semantics/openAccess ScienceDirect SI