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|Title:||Localized 5f Electrons in Superconducting PuCoIn5 - Consequences for Superconductivity in PuCoGa5|
|Authors:||BAUER E.d.; ALTARAWNEH M. M.; TOBASH Paul Henry; GOFRYK Krzysztof; AYALA-VALENZUELA O. E.; MITCHELL J. N.; MCDONALD R. D.; MIELKE C. H.; RONNING F; GRIVEAU Jean-Christophe; COLINEAU Eric; ELOIRDI Rachel; CACIUFFO Roberto; SCHOTT 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|
|Type:||Articles in periodicals and books|
|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 Directorate:||Nuclear Safety and Security|
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