Two-component order-parameter model for pure and thorium-doped superconducting UBe13

P. Kumar; P. Wolfle

doi:10.1103/PhysRevLett.59.1954

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Two-component order-parameter model for pure and thorium-doped superconducting UBe13

P. Kumar, P. Wolfle

DOI 10.1103/PhysRevLett.59.1954 · Physical Review Letters

T1

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Abstract

We discuss a Ginzburg-Landau model of two even-parity superconducting order parameters (e.g., of s-wave and d-wave symmetry with transition temperatures T0 and T2, respectively) as a model for UxTh1−xBe13. The critical temperatures for the pure system are assumed such that T2>T0. We suggest that impurity scattering strongly suppresses T2 but barely affects T0 so that the above inequality is reversed for an impurity concentration x>xc. For special choices of order parameters, the second component is switched on continuously in the pure system (x<xc) but via a second-order phase transition in the impure system (x>xc).

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.	—	Pressure not reported	unknown
U1-xThxBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown