Localized 5f electrons in superconducting PuCoIn 5: Consequences for superconductivity in PuCoGa 5

E. D. Bauer; M. M. Altarawneh; P. H. Tobash; K. Gofryk; O. E. Ayala-Valenzuela; J. N. Mitchell; R. D. McDonald; C. H. Mielke; F. Ronning; J. C. Griveau; E. Colineau; R. Eloirdi; R. Caciuffo; B. L. Scott; O. Janka; S. M. Kauzlarich; J. D. Thompson

doi:10.1088/0953-8984/24/5/052206

Localized 5f electrons in superconducting PuCoIn ₅: Consequences for superconductivity in PuCoGa ₅

E. D. Bauer, M. M. Altarawneh, P. H. Tobash, K. Gofryk, O. E. Ayala-Valenzuela, J. N. Mitchell, R. D. McDonald, C. H. Mielke, F. Ronning, J. C. Griveau, E. Colineau, R. Eloirdi, R. Caciuffo, B. L. Scott, O. Janka, S. M. Kauzlarich, J. D. Thompson

Chemistry

Research output: Contribution to journal › Article

52 Scopus citations

Abstract

The physical properties of the first In analog of the PuMGa ₅ (M=Co, Rh) family of superconductors, PuCoIn ₅, are reported. With its unit cell volume being 28% larger than that of PuCoGa ₅, the characteristic spin-fluctuation energy scale of PuCoIn ₅ is three to four times smaller than that of PuCoGa ₅, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa ₅. This raises the possibility that the high superconducting transition temperature T _c=18.5K of PuCoGa ₅ stems from the proximity to a valence instability, while the superconductivity at T _c=2.5K of PuCoIn ₅ is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.

Original language	English (US)
Article number	052206
Journal	Journal of Physics Condensed Matter
Volume	24
Issue number	5
DOIs	https://doi.org/10.1088/0953-8984/24/5/052206
State	Published - Feb 8 2012

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ASJC Scopus subject areas

Condensed Matter Physics
Materials Science(all)
Medicine(all)

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Bauer, E. D., Altarawneh, M. M., Tobash, P. H., Gofryk, K., Ayala-Valenzuela, O. E., Mitchell, J. N., McDonald, R. D., Mielke, C. H., Ronning, F., Griveau, J. C., Colineau, E., Eloirdi, R., Caciuffo, R., Scott, B. L., Janka, O., Kauzlarich, S. M., & Thompson, J. D. (2012). Localized 5f electrons in superconducting PuCoIn ₅: Consequences for superconductivity in PuCoGa ₅. Journal of Physics Condensed Matter, 24(5), [052206]. https://doi.org/10.1088/0953-8984/24/5/052206

Localized 5f electrons in superconducting PuCoIn ₅ : Consequences for superconductivity in PuCoGa ₅. / Bauer, E. D.; Altarawneh, M. M.; Tobash, P. H.; Gofryk, K.; Ayala-Valenzuela, O. E.; Mitchell, J. N.; McDonald, R. D.; Mielke, C. H.; Ronning, F.; Griveau, J. C.; Colineau, E.; Eloirdi, R.; Caciuffo, R.; Scott, B. L.; Janka, O.; Kauzlarich, S. M.; Thompson, J. D.

In: Journal of Physics Condensed Matter, Vol. 24, No. 5, 052206, 08.02.2012.

Research output: Contribution to journal › Article

Bauer, ED, Altarawneh, MM, Tobash, PH, Gofryk, K, Ayala-Valenzuela, OE, Mitchell, JN, McDonald, RD, Mielke, CH, Ronning, F, Griveau, JC, Colineau, E, Eloirdi, R, Caciuffo, R, Scott, BL, Janka, O, Kauzlarich, SM & Thompson, JD 2012, 'Localized 5f electrons in superconducting PuCoIn ₅: Consequences for superconductivity in PuCoGa ₅', Journal of Physics Condensed Matter, vol. 24, no. 5, 052206. https://doi.org/10.1088/0953-8984/24/5/052206

Bauer, E. D. ; Altarawneh, M. M. ; Tobash, P. H. ; Gofryk, K. ; Ayala-Valenzuela, O. E. ; Mitchell, J. N. ; McDonald, R. D. ; Mielke, C. H. ; Ronning, F. ; Griveau, J. C. ; Colineau, E. ; Eloirdi, R. ; Caciuffo, R. ; Scott, B. L. ; Janka, O. ; Kauzlarich, S. M. ; Thompson, J. D. / Localized 5f electrons in superconducting PuCoIn ₅ : Consequences for superconductivity in PuCoGa ₅. In: Journal of Physics Condensed Matter. 2012 ; Vol. 24, No. 5.

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abstract = "The physical properties of the first In analog of the PuMGa 5 (M=Co, Rh) family of superconductors, PuCoIn 5, are reported. With its unit cell volume being 28% larger than that of PuCoGa 5, the characteristic spin-fluctuation energy scale of PuCoIn 5 is three to four times smaller than that of PuCoGa 5, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa 5. This raises the possibility that the high superconducting transition temperature T c=18.5K of PuCoGa 5 stems from the proximity to a valence instability, while the superconductivity at T c=2.5K of PuCoIn 5 is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.",

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AB - The physical properties of the first In analog of the PuMGa 5 (M=Co, Rh) family of superconductors, PuCoIn 5, are reported. With its unit cell volume being 28% larger than that of PuCoGa 5, the characteristic spin-fluctuation energy scale of PuCoIn 5 is three to four times smaller than that of PuCoGa 5, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa 5. This raises the possibility that the high superconducting transition temperature T c=18.5K of PuCoGa 5 stems from the proximity to a valence instability, while the superconductivity at T c=2.5K of PuCoIn 5 is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.

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10.1088/0953-8984/24/5/052206