Implications of Tc variation in UBe13 for a possible Fulde-Ferrell-Larkin-Ovchinnikov phase

H. A. Radovan; R. J. Zieve; J. S. Kim; G. R. Stewart

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Implications of Tc variation in UBe13 for a possible Fulde-Ferrell-Larkin-Ovchinnikov phase

H. A. Radovan·R. J. Zieve·J. S. Kim·G. R. Stewart

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Abstract

We measure the heat capacity of UBe13 with an unusually low Tc for a polycrystal. We find an upturn in the upper critical field Hc2(T) below about Tc/2, much as for higher-Tc samples. Comparing the critical fields in our sample and in samples with higher Tc's shows that the low-temperature limit of Hc2 is proportional to Tc(H=0), as expected if the upturn comes from an FFLO phase and strong coupling.

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H. A. Radovan, R. J. Zieve, J. S. Kim, G. R. Stewart. 2003-06-17. Implications of Tc variation in UBe13 for a possible Fulde-Ferrell-Larkin-Ovchinnikov phase. https://arxiv.org/abs/cond-mat/0306451

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