Field-temperature phase diagram and entropy landscape of CeAuSb2

Lishan Zhao; Edward A. Yelland; Jan A. N. Bruin; Ilya Sheikin; Paul C. Canfield; Veronika Fritsch; Hideaki Sakai; Andrew P. Mackenzie; Clifford W. Hicks

doi:10.1103/PhysRevB.93.195124

Field-temperature phase diagram and entropy landscape of CeAuSb₂

Lishan Zhao, Edward A. Yelland, Jan A. N. Bruin, Ilya Sheikin, Paul C. Canfield, Veronika Fritsch, Hideaki Sakai, Andrew P. Mackenzie, Clifford W. Hicks

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Abstract

We report a field-temperature phase diagram and an entropy map for the heavy fermion compound CeAuSb₂. CeAuSb₂ orders antiferromagnetically below T_N=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.

Original language	English
Article number	195124
Number of pages	7
Journal	Physical Review. B, Condensed matter and materials physics
Volume	93
DOIs	https://doi.org/10.1103/PhysRevB.93.195124
Publication status	Published - 12 May 2016

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10.1103/PhysRevB.93.195124Licence: CC BY

PhysRevB.93.195124
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.
Final published version, 782 KBLicence: CC BY

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems
Wahl, P. (PI), Baumberger, F. (CoI), Davis, J. C. (CoI), Green, A. (CoI), Hooley, C. (CoI), Keeling, J. M. J. (CoI) & Mackenzie, A. (CoI)
EPSRC
1/09/11 → 31/08/17
Project: Standard
Sr3Ru2O7 Quantum Nematic Fluid Vector: Sr3RuO7 Quantum Nematic Fluid Vector Magnetic Field Tuning and Spectroscopic Imaging Scanning Tunneling Microscopy
Mackenzie, A. (PI) & Davis, J. C. (CoI)
EPSRC
1/04/09 → 31/03/13
Project: Standard

Data Underpinning - Field-Temperature Phase Diagram and Entropy Landscape of CeAuSb2
Zhao, L. (Creator), Yelland, E. (Contributor), Bruin, J. (Contributor), Sheikin, I. (Contributor), Canfield, P. (Contributor), Fritsch, V. (Contributor), Sakai, H. (Contributor), Mackenzie, A. (Creator) & Hicks, C. (Creator), University of St Andrews, 13 May 2016
DOI: 10.17630/fba45bfc-281b-44f4-9db8-a2786613851c
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@article{c93255e16a0d403d9487b8603c07f4ea,

title = "Field-temperature phase diagram and entropy landscape of CeAuSb2",

abstract = "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 N{\'e}el transition the Ce moments are incorporated into the Fermi liquid. High-field data showing that the magnetic behavior is remarkably anisotropic are also reported.",

author = "Lishan Zhao and Yelland, {Edward A.} and Bruin, {Jan A. N.} and Ilya Sheikin and Canfield, {Paul C.} and Veronika Fritsch and Hideaki Sakai and Mackenzie, {Andrew P.} and Hicks, {Clifford W.}",

note = "The 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.",

year = "2016",

month = may,

day = "12",

doi = "10.1103/PhysRevB.93.195124",

language = "English",

volume = "93",

journal = "Physical Review. B, Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Field-temperature phase diagram and entropy landscape of CeAuSb2

AU - Zhao, Lishan

AU - Yelland, Edward A.

AU - Bruin, Jan A. N.

AU - Sheikin, Ilya

AU - Canfield, Paul C.

AU - Fritsch, Veronika

AU - Sakai, Hideaki

AU - Mackenzie, Andrew P.

AU - Hicks, Clifford W.

N1 - The 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.

PY - 2016/5/12

Y1 - 2016/5/12

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevB.93.195124

DO - 10.1103/PhysRevB.93.195124

M3 - Article

SN - 1098-0121

VL - 93

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

M1 - 195124

ER -

Field-temperature phase diagram and entropy landscape of CeAuSb2

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Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Sr3Ru2O7 Quantum Nematic Fluid Vector: Sr3RuO7 Quantum Nematic Fluid Vector Magnetic Field Tuning and Spectroscopic Imaging Scanning Tunneling Microscopy

Datasets

Data Underpinning - Field-Temperature Phase Diagram and Entropy Landscape of CeAuSb2

Cite this

Field-temperature phase diagram and entropy landscape of CeAuSb₂