Possible itinerant excitations and quantum spin state transitions in the effective spin-1/2 triangular-lattice antiferromagnet Na2BaCo(PO4)2

N. Li; Q. Huang; X. Y. Yue; W. J. Chu; Q. Chen; E. S. Choi; X. Zhao; H. D. Zhou; X. F. Sun

doi:10.1038/s41467-020-18041-3

Nature Communications (Aug 2020)

Possible itinerant excitations and quantum spin state transitions in the effective spin-1/2 triangular-lattice antiferromagnet Na2BaCo(PO4)2

N. Li,
Q. Huang,
X. Y. Yue,
W. J. Chu,
Q. Chen,
E. S. Choi,
X. Zhao,
H. D. Zhou,
X. F. Sun

Affiliations

N. Li: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, and Key Laboratory of Strongly-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China
Q. Huang: Department of Physics and Astronomy, University of Tennessee
X. Y. Yue: Institute of Physical Science and Information Technology, Anhui University
W. J. Chu: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, and Key Laboratory of Strongly-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China
Q. Chen: Department of Physics and Astronomy, University of Tennessee
E. S. Choi: National High Magnetic Field Laboratory, Florida State University
X. Zhao: School of Physical Sciences, University of Science and Technology of China
H. D. Zhou: Department of Physics and Astronomy, University of Tennessee
X. F. Sun: Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, and Key Laboratory of Strongly-Coupled Quantum Matter Physics (CAS), University of Science and Technology of China

DOI: https://doi.org/10.1038/s41467-020-18041-3
Journal volume & issue: Vol. 11, no. 1
pp. 1 – 9

Abstract

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Thermal conductivity evidence of a spinon Fermi surface has been rare. Here, the authors report a finite linear increase of thermal conductivity with temperature in Na2BaCo(PO4)2 at ultra-low temperature, suggesting possible gapless quantum spin liquid behavior.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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