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UBe13 and U1−xThxBe13: Unconventional Superconductors

  • G. R. StewartEmail author
Article
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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 

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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