Impurity Scattering and Triplet Superconductivity in UPt3
Y. Dalichaouch, M. C. de Andrade, D. A. Gajewski, R. Chau, P. Visani, M. B. Maple
DOI 10.1103/PhysRevLett.75.3938 · Physical Review Letters
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Abstract
Substitution of rare earths (R), Th, and Zr for U in UPt3 depresses the superconducting transition temperature Tc at an initial rate (ΔTcx), where x is the impurity concentration, that increases linearly with increasing residual resistivity ρ0, indicating that the primary pair breaking mechanism is impurity potential scattering. The scaling of (ΔTcx) with ρ0 is strong evidence for anisotropic superconductivity in UPt3. The absence of a correlation of (ΔTcx) with the de Gennes factor of the R ions suggests that the superconducting order parameter in the A phase of UPt3 has odd parity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | Pressure not reported | onset |
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