Superconducting phases of URu2Si2

A.P. Ramirez, T. Siegrist, T.T.M. Palstra, J.D. Garrett, E. Bruck, A.A. Menovsky, J.A. Mydosh

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Thermodynamic data near the superconducting Tc on several different single-crystal specimens of the heavy-fermion system URu2Si2 are presented. Multiple-peak structure and narrow transition widths (ΔTc/Tc=0.05) are observed in the specific heat of the highest-quality samples. By carefully sectioning one of the crystals, it is shown that these peaks occur in macroscopically different parts of the crystal, and not as a result of vector superconductivity. Implications for the multiple-peak structure in UPt3 are discussed.
Original languageEnglish
Number of pages4
JournalPhysical Review B
Issue number10
Publication statusPublished - 1991

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