Implications of Tc-Variation in UBe13 for a Possible Fulde–Ferrell–Larkin–Ovchinnikov Phase |
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| Authors: | H A Radovan R J Zieve J S Kim and G R Stewart |
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| Affiliation: | (1) Physics Department, University of California at Davis, Davis, California, 95616;(2) Physics Department, University of Florida, Gainesville, Florida, 32661 |
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| Abstract: | We measure the heat capacity of a UBe13 sample with an unusually low T
c for a polycrystal. We find an upturn in the upper critical field H
c2(T) below about T
c/2, much as for higher-T
c samples. Comparing the critical fields in our sample and in samples with higher T
c's shows that the low temperature limit of H
c2 is proportional to T
c(H = 0), as expected if the upturn comes from an FFLO phase and strong coupling. |
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| Keywords: | heavy-fermion critical field FFLO phase |
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