Influence of impurities and magnetic fields on the normal and superconducting states of UBe13
H. R. Ott, H. Rudigier, E. Felder, Z. Fisk, J. L. Smith
DOI 10.1103/PhysRevB.33.126 · Physical Review B
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Abstract
Small amounts of Th and Lu impurities considerably affect both the low-temperature normal and the superconducting states of UBe13. Th enhances the electronic specific-heat parameter γ for T→0 K and leads to a second phase transition in the superconducting state. Lu substitution for U suppresses superconductivity quite effectively, and also γ is sizably reduced. Bulk measurements confirm the unusual Hc2(T) curve of UBe13 that was previously obtained from electrical resistivity experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.9 | Pressure not reported | onset |
| U1-xThxBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.6 | Pressure not reported | unknown |
| U0.9669Th0.0331Be13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.6 | Pressure not reported | unknown |
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