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Magnetic properties and signatures of ordering in triangular lattice antiferromagnet KCeO2.
Bordelon, Mitchell M; Wang, Xiaoling; Pajerowski, Daniel M; Banerjee, Arnab; Sherwin, Mark; Brown, Craig M; Eldeeb, M S; Petersen, T; Hozoi, L; Rler, U K; Mourigal, Martin; Wilson, Stephen D.
Affiliation
  • Bordelon MM; Materials Department, University of California, Santa Barbara, California 93106, USA.
  • Wang X; Department of Physics and Center for Terahertz Science and Technology, University of California, Santa Barbara, California 93106, USA.
  • Pajerowski DM; Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  • Banerjee A; Department of Physics, Purdue University, West Lafayette, Indiana 47906, USA.
  • Sherwin M; Department of Physics and Center for Terahertz Science and Technology, University of California, Santa Barbara, California 93106, USA.
  • Brown CM; Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA.
  • Eldeeb MS; Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
  • Petersen T; Institute for Theoretical Solid State Physics, Leibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany.
  • Hozoi L; Institute for Theoretical Solid State Physics, Leibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany.
  • RÓ§ßler UK; Institute for Theoretical Solid State Physics, Leibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany.
  • Mourigal M; Institute for Theoretical Solid State Physics, Leibniz IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany.
  • Wilson SD; School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
Phys Rev B ; 104(9)2021 Sep.
Article in En | MEDLINE | ID: mdl-37780895
ABSTRACT
The magnetic ground state and the crystalline electric field level scheme of the triangular lattice antiferromagnet KCeO2 are investigated. Below TN=300 mK, KCeO2 develops signatures of magnetic order in specific heat measurements and low energy inelastic neutron scattering data. Trivalent Ce3+ ions in the D3d local environment of this compound exhibit large splittings among the lowest three 4f1 Kramers doublets defining for the free ion the J=5/2 sextet and a ground state doublet with dipole character, consistent with recent theoretical predictions in M. S. Eldeeb et al. Phys. Rev. Materials 4, 124001 (2020). An unexplained, additional local mode appears, and potential origins of this anomalous mode are discussed.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev B Year: 2021 Document type: Article Affiliation country: United States Publication country: EEUU / ESTADOS UNIDOS / ESTADOS UNIDOS DA AMERICA / EUA / UNITED STATES / UNITED STATES OF AMERICA / US / USA
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev B Year: 2021 Document type: Article Affiliation country: United States Publication country: EEUU / ESTADOS UNIDOS / ESTADOS UNIDOS DA AMERICA / EUA / UNITED STATES / UNITED STATES OF AMERICA / US / USA