Specific heat of UPt3: Evidence for unconventional superconductivity

R. A. Fisher; S. Kim; B. F. Woodfield; N. E. Phillips; L. Taillefer; K. Hasselbach; J. Flouquet; A. L. Giorgi; J. L. Smith

doi:10.1103/PhysRevLett.62.1411

Specific heat of UPt3: Evidence for unconventional superconductivity

R. A. Fisher, S. Kim, B. F. Woodfield, N. E. Phillips, L. Taillefer, K. Hasselbach, J. Flouquet, A. L. Giorgi, J. L. Smith

DOI 10.1103/PhysRevLett.62.1411 · Physical Review Letters

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Abstract

The specific heats of two samples of UPt3 have been measured in the vicinity of the transition to the superconducting state. In both cases the specific-heat anomalies are sharper than any previously observed, and two maxima are clearly resolved. The results are interpreted as evidence of a splitting of the transition and unconventional pairing. A model that is consistent with the known sample dependence of the superconducting-state specific heat is used to derive ‘‘intrinsic’’ values of the related parameters.

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.	0.47	Pressure not reported	onset
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.4	Pressure not reported	onset