Superconducting double transition in a heavy-fermion material UPt3

Kazushige Machida; Masa-aki Ozaki

doi:10.1103/PhysRevLett.66.3293

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Superconducting double transition in a heavy-fermion material UPt3

Kazushige Machida, Masa-aki Ozaki

DOI 10.1103/PhysRevLett.66.3293 · Physical Review Letters

T1

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Abstract

To explain the field-independent phase diagrams observed in UPt3 a scenario based on a superconducting (SC) class belonging to the one-dimensional representation (1D-rep) with odd parity is proposed. The antiferromagnetic (AF) order lifts the spin-space degeneracy of the pairing function to split Tc. A nontrivial coupling of the two orderings, SC and AF, is derived and a Ginzburg-Landau theory is developed to examine the successive phase transitions. It is demonstrated that the present 1D-rep scenario is more consistent with various experiments on UPt3 than the previous 2D-rep scenario.

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