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Superconducting phase diagram of the filled skuterrudite PrOs4Sb12

M. -A. Measson·D. Braithwaite·J. Flouquet·G. Seyfarth·J. P. Brison·E. Lhotel·C. Paulsen·H. Sugawara·H. Sato
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Abstract

We present new measurements of the specific heat of the heavy fermion superconductor PrOs4Sb12, on a sample which exhibits two sharp distinct anomalies at Tc1= 1.89K and Tc2= 1.72K. They are used to draw a precise magnetic field-temperature superconducting phase diagram of PrOs4Sb12 down to 350 mK. We discuss the superconducting phase diagram of PrOs4Sb12 and its possible relation with an unconventional superconducting order parameter. We give a detailed analysis of Hc2(T), which shows paramagnetic limitation (a support for even parity pairing) and multiband effects.

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M. -A. Measson, D. Braithwaite, J. Flouquet, G. Seyfarth, J. P. Brison, E. Lhotel, C. Paulsen, H. Sugawara, H. Sato. 2004-03-16. Superconducting phase diagram of the filled skuterrudite PrOs4Sb12. https://doi.org/10.1103/physrevb.70.064516

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