Field-temperature phase diagram and entropy landscape of CeAuSb2
MetadataShow full item record
We report a field-temperature phase diagram and an entropy map for the heavy fermion compound CeAuSb2. CeAuSb2 orders antiferromagnetically below TN=6.6 K, and has two metamagnetic transitions, at 2.8 and 5.6 T. The locations of the critical endpoints of the metamagnetic transitions, which may play a strong role in the putative quantum criticality of CeAuSb2 and related compounds, are identified. The entropy map reveals an apparent entropy balance with Fermi liquid behavior, implying that above the Néel transition the Ce moments are incorporated into the Fermi liquid. High-field data showing that the magnetic behavior is remarkably anisotropic are also reported.
Zhao , L , Yelland , E A , Bruin , J A N , Sheikin , I , Canfield , P C , Fritsch , V , Sakai , H , Mackenzie , A P & Hicks , C W 2016 , ' Field-temperature phase diagram and entropy landscape of CeAuSb 2 ' , Physical Review. B, Condensed matter and materials physics , vol. 93 , 195124 . https://doi.org/10.1103/PhysRevB.93.195124
Physical Review. B, Condensed matter and materials physics
Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
DescriptionThe authors thank the EPSRC and the Max Planck Society for financial support. The authors also acknowledge the support of the LNCMI-CNRS, member of the European Magnetic Field Laboratory (EMFL). E.A.Y. acknowledges support from the Royal Society. P.C.C. was supported, in part, by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering through the Ames Laboratory. V.F. acknowledges support by the Deutsche Forschungsgemeinschaft through FOR 960. H.S. gratefully acknowledges fellowships from the Canon Foundation.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.