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UBe13 and U1−xThxBe13: Unconventional Superconductors

  • G. R. StewartEmail author
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Abstract

UBe13 was the second discovered heavy fermion superconductor, and numerous pieces of evidence exist that imply that it is an unconventional (non-BCS s-wave) superconductor. Exhibiting even more signs of unconventional superconductivity, Th-doped UBe13 is perhaps the most puzzling of any of the unconventional superconductors. This review considers both the parent, undoped compound as well as the more interesting U1−xThxBe13. After summarizing the rather thorough characterization—which because of the interest in these compounds, has continued from their discovery in 1983 and 1984 to date—these properties are compared with a recent ‘template’ for determining whether a superconductor is unconventional. Finally, further experiments are suggested.

Keywords

Superconductivity Heavy fermion Unconventional 
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Notes

Acknowledgements

Helpful discussions with P. Kumar and assistance with the graphs by J. S. Kim and E.-W. Scheidt are gratefully acknowledged. Work performed under the auspices of the Bureau of Energy Sciences, U. S. Department of Energy, contract number DE-FG02-86ER45268.

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Authors and Affiliations

  1. 1.Department of PhysicsUniversity of FloridaGainesvilleUSA

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