Title: Localized 5f Electrons in Superconducting PuCoIn5 - Consequences for Superconductivity in PuCoGa5
Authors: BAUER E.d.ALTARAWNEH M. M.TOBASH Paul HenryGOFRYK KrzysztofAYALA-VALENZUELA O. E.MITCHELL J. N.MCDONALD R. D.MIELKE C. H.RONNING FGRIVEAU Jean-ChristopheCOLINEAU EricELOIRDI RachelCACIUFFO RobertoSCHOTT B. L.JANKA O.KAUZLARICH S. M.THOMPSON J.d.
Citation: JOURNAL OF PHYSICS-CONDENSED MATTER vol. 24 no. 5 p. 052206,1 - 052206,5
Publisher: IOP PUBLISHING LTD
Publication Year: 2012
JRC N°: JRC66912
ISSN: 0953-8984
URI: http://iopscience.iop.org/0953-8984/24/5/052206/
http://publications.jrc.ec.europa.eu/repository/handle/JRC66912
DOI: 10.1088/0953-8984/24/5/052206
Type: Articles in Journals
Abstract: The physical properties of the first In analog of the PuMGa5 (M=Co, Rh) family of superconductors, PuCoIn5, are reported. With its unit cell volume being 28% larger than that of PuCoGa5, the characteristic spin-fluctuation energy scale of PuCoIn5 is three to four times smaller than that of PuCoGa5, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa5. This raises the possibility that the high superconducting transition temperature Tc = 18.5 K in PuCoGa5 stems from proximity to a valence instability, while superconductivity at Tc = 2.5 K in PuCoIn5 is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.
JRC Institute:Institute for Transuranium Elements

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