Investigation of the heavy fermion state and superconductivity in Pr(1-x)La(x)Os4Sb12 by the upper critical field slope at Tc.

Abstract

Measurements of the upper critical field H(c2) near T(c) of Pr(1 - x)La(x)Os(4)Sb(12) were performed by specific heat. The results support the hypothesis of a non-single-ion origin of m* enhancement in PrOs(4)Sb(12), derived from the analysis of the C/T discontinuity at T(c). Both sets of measurements indicate the existence of a crossover concentration, x… (More)
DOI: 10.1088/0953-8984/22/34/345701

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