Probing the coulomb interaction of the unconventional superconductor PuCoGa 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.*; Ole, A. M.*; Parlinski, K.*

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 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.

Language	:	English
Journal	:	Physical Review Letters
Volume	:	96
Number	:	23
Pages	:	p.237003_1 - 237003_4
Publication Year/Month	:	2006/06
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Paper URL	:	https://doi.org/10.1103/PhysRevLett.96.237003
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Keywords	:	no keyword
Research Facility	:	JRR-3M(研究炉3)
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Registration No. : AA20060473
JAEA Abstracts No. : 35000343
Paper Submission No. : 1892

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