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.

*M.Y., X.W., and G.B. were supported by NSF under Grant DMR-1104884; X.X., J.K., and S.-W.C. by DOE under Grant No. DOE: DE-FG02-07ER46382.

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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