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Non-Kramers doublet ground state of the triangular-lattice spin-liquid candidate TbInO<sub>3</sub>

ORAL

Abstract

Ferroelectric insulator TbInO3 has been proposed to be a 2D spin-liquid candidate. This material has a Weiss temperature of -17K, but no magnetic ordering occurs down to 0.1K [Nat. Phys. 15, 262 (2019)]. It remains unclear whether the magnetic lattice has honeycomb or triangular symmetry at low temperature. We study the ground state properties of this system by probing its crystal-field (CF) excitations using inelastic light scattering. The experimentally established CF level scheme provides a satisfactory description for the low-temperature specific heat and entropy data. In particular, we demonstrate that the Tb ions have a non-Kramers doublet ground state, and these doublets from a triangular magnetic lattice.

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Presenters

  • Mai Ye

    Department of Physics and Astronomy, Rutgers University-New Brunswick

Authors

  • Mai Ye

    Department of Physics and Astronomy, Rutgers University-New Brunswick

  • Xianghan Xu

    Department of Physics and Astronomy, Rutgers University-New Brunswick, Rutgers, The State University of New Jersey, Department of Physics and Astronomy, Rutgers University

  • Xiangyue Wang

    Department of Physics and Astronomy, Rutgers University-New Brunswick

  • Jaewook Kim

    Korea Advanced Institute of Science & Technology

  • Sang-Wook Cheong

    Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University-New Brunswick, Rutgers Center for Emergent Materials, Rutgers University, Rutgers, The State University of New Jersey, Rutgers University, Department of Physics and Astronomy, Rutgers University, Center for Quantum Materials Synthesis, Rutgers University, Center for Emergent Materials and Department of Physics and Astronomy, Rutgers

  • Girsh Blumberg

    Department of Physics and Astronomy, Rutgers University-New Brunswick, Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University