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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Nematic State in CeAuSb2

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Seo, S. [1] ; Wang, Xiaoyu [2] ; Thomas, S. M. [1] ; Rahn, M. C. [1, 3] ; Carmo, D. [4] ; Ronning, F. [1] ; Bauer, E. D. [1] ; dos Reis, R. D. [4] ; Janoschek, M. [1, 5] ; Thompson, J. D. [1] ; Fernandes, R. M. [6] ; Rosa, P. F. S. [1]
Total Authors: 12
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 - USA
[2] Univ Chicago, James Franck Inst, Chicago, IL 60615 - USA
[3] Tech Univ Dresden, Inst Solid State & Mat Phys, D-01062 Dresden - Germany
[4] Brazilian Synchrotron Light Lab LNLS, BR-13083100 Campinas, SP - Brazil
[5] Paul Scherrer Inst, Lab Sci Dev & Novel Mat, CH-5232 Villigen - Switzerland
[6] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 - USA
Total Affiliations: 6
Document type: Journal article
Source: PHYSICAL REVIEW X; v. 10, n. 1 FEB 13 2020.
Web of Science Citations: 0

At ambient pressure and zero field, tetragonal CeAuSb2 hosts stripe antiferromagnetic order at T-N = 6.3 K. 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 C-4 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. (AU)

FAPESP's process: 18/22883-5 - Unconventional phases of actinide compounds under extreme conditions
Grantee:Danusa do Carmo
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 18/00823-0 - New topological states of matter under extreme conditions
Grantee:Ricardo Donizeth dos Reis
Support type: Research Grants - Young Investigators Grants