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Published February 13, 2020 | Version v1
Journal article Open

Nematic State in CeAuSb2

Creators

  • 1. Los Alamos National Laboratory
  • 2. University of Chicago
  • 3. Brazilian Synchrotron Light Laboratory
  • 4. University of Minnesota

Description

At ambient pressure and zero field, tetragonal CeAuSb2 hosts stripe antiferromagnetic order at TN = 6.3K. Here, we first show via bulk thermodynamic probes and x-ray diffraction measurements that this magnetic order is connected with a structural phase transition to a superstructure that likely breaks C4 symmetry, thus signaling nematic order. The temperature-field-pressure phase diagram of CeAuSb2 subsequently reveals the emergence of additional ordered states under applied pressure at a multicritical point. Our phenomenological model supports the presence of a vestigial nematic phase in CeAuSb2 akin to iron-based high-temperature superconductors; however, superconductivity, if present, remains to be discovered.

Notes

Correction: Support information for the 11th author was missing from the Acknowledgments and has been inserted.

Files

PhysRevX.10.011035.pdf

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Additional details

Identifiers

DOI
10.1103/PhysRevX.10.011035
Other
oai:uchicago.tind.io:11410

Funding

U.S. Department of Energy
DE-SC0012336
U.S. Department of Energy
DE-SC0020045
National Science Foundation
DMR-1420709
CAPES and FAPESP
2018/00823-0
CAPES and FAPESP
2018/22883-5

UChicago Information

Division(s)
Institutes & Centers
Center(s) or Institute(s)
James Franck Institute