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

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

Superconductivity 2007-05-23 v1

Authors: H. A. Radovan , R. J. Zieve , J. S. Kim , G. R. Stewart

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.

Keywords

UBe13 critical field FFLO phase heat capacity superconductivity

Cite

@article{arxiv.cond-mat/0306451,
  title  = {Implications of Tc variation in UBe13 for a possible Fulde-Ferrell-Larkin-Ovchinnikov phase},
  author = {H. A. Radovan and R. J. Zieve and J. S. Kim and G. R. Stewart},
  journal= {arXiv preprint arXiv:cond-mat/0306451},
  year   = {2007}
}

Comments

4 pages, 3 figures

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