UBe13 and U1-xThxBe13: Unconventional Superconductors

Abstract

UBe13 was the second discovered heavy fermion superconductor, and numerous pieces of evidence exist that imply that it is an unconventional (non-BCS, non-s wave pairing symmetry) 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 Th-doped UBe13. 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.

accepted review to appear in Journal of Low Temperature Physics

References in corpus (3)

• Unconventional Superconductivity
• Quasiparticle Excitations and Evidence for Superconducting Double Transitions in Monocrystalline U0.97Th0.03Be13
• Spin triplet nematic pairing symmetry and superconducting double transition in U${}_{1-x}$Th${}_x$Be${}_{13}$

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• Stability of Bogoliubov Fermi Surfaces within BCS Theory
• Theory of $(s+id)$ pairing in mixed-valent correlated metals
• Spin susceptibility of nonunitary spin-triplet superconductors
• Electron-beam Floating-zone Refined UCoGe
• Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe${}_{13}$
• Axionic $p+is$ superconductivity from two pairing channels