Polarized Inelastic Neutron Scattering Results on the Kitaev Spin-Liquid Candidate D<sub>3</sub>LiIr<sub>2</sub>O<sub>6</sub>

ORAL

Abstract

A central theme of condensed matter physics in recent years has been the realization of materials that exhibit a quantum spin-liquid state beyond one dimension. The only model of the quantum spin-liquid state that is exactly solvable is known as the Kitaev model, which consists of a 2D honeycomb lattice of Jeff = ½ moment magnetic ions. NMR and other bulk sample characterization has suggested that the properties of the material H3LiIr2O6 are consistent with those of a Kitaev spin-liquid [1]. The structure consists of a honeycomb lattice of Ir4+ ions with strong spin-orbit coupling to support the bond dependent exchange interactions required in the Kitaev model. Using inelastic neutron scattering on the SEQUOIA and HYSPEC instruments at ORNL, we probed the material for magnetic excitations. Both polarized and unpolarized inelastic studies reveal information regarding the low energy excitations in the potential KSL state.

*This work was supported as part of the Institute forQuantum Matter, an Energy Frontier Research Centerfunded by the U.S. Department of Energy, Office ofScience, Basic Energy Sciences under Award No. DE-SC001933.

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Presenters

  • Thomas Halloran

    • Johns Hopkins University

Authors

  • Thomas Halloran

    • Johns Hopkins University

  • Yishu Wang

    • Johns Hopkins University

  • Collin Leslie Broholm

    • Johns Hopkins University
    • Department of Physics and Astronomy and Institute for Quantum Matter, The Johns Hopkins University
    • Department of Physics and Astronomy and Institute for Quantum Matter, Johns Hopkins University, Baltimore, Maryland 21218, USA
    • Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University
    • Physics, The Johns Hopkins University