Ginzburg-Landau theory of the phase diagram of superconducting UPt3

Anupam Garg

doi:10.1103/PhysRevLett.69.676

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Ginzburg-Landau theory of the phase diagram of superconducting UPt3

Anupam Garg

DOI 10.1103/PhysRevLett.69.676 · Physical Review Letters

T1

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Abstract

The phase diagram of superconducting UPt3 is investigated within a Ginzburg-Landau theory that uses a complex two-component vector order parameter. For fields both along the c axis and in the basal plane, the theory allows for a kink in Hc2(T), but the inner lines may not be true phase boundaries. For basal plane fields, an additional transition is predicted at which a magnetization transverse to the field develops. For otherwise-oriented fields, there is no kink in Hc2. The nature of the order parameter in the various phases is determined.

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.	—	Pressure not reported	unknown