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Magnetism on ideal triangular lattices in NaBaYb(BO<sub>3</sub>)<sub>2</sub>

ORAL

Abstract

In the search for compounds that have a stable spin liquid phase, the triangular lattice of Yb is of interest. Frustration combined with the quantum spin-orbital degree of freedom of Yb provides potentially favorable conditions for a quantum spin liquid. Here we study NaBaYb(BO3)2, which has two different triangular layers of Yb; one sandwiched between two layers of Na, the other between two layers of Ba. Here we discuss, the low-temperature heat capacity and susceptibility of this compound. Our high-field heat capacity data and susceptibility data indicate Yb3+ has a Kramers doublet ground state. From lower field data where the Schottky anomaly moves to lower T, we infer the energy scale of inter-site interactions is similar to that of magnetic dipole interactions. While we find a small anomaly in the zero-field heat capacity at 0.41(2)K, most of the Rln2 magnetic entropy is retained to the lowest T=0.1 K accessed here [1].


[1] S. Guo, A. Ghasemi, C. L. Broholm, and R. J. Cava, Phys. Rev. Mater. 3, 94404 (2019).

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Presenters

  • Alireza Ghasemi

    Johns Hopkins University

Authors

  • Alireza Ghasemi

    Johns Hopkins University

  • Shu Guo

    Princeton University, Chemistry, Princeton University

  • Robert J. Cava

    Princeton University, Chemistry, Princeton University, Department of Chemistry, Princeton University, Chemistry, Pinceton University, Princeton Univ

  • Collin Leslie Broholm

    The Johns Hopkins University, Johns Hopkins University, Physics and Astronomy, Johns Hopkins University, Physics, The Johns Hopkins University, Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University