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A quantitative study of short-range correlations in triangular Ising antiferromagnet TmMgGaO<sub>4</sub> via magnetic pair distribution function analysis

ORAL

Abstract

Interacting Ising spins decorating a triangular lattice are expected to show rich magnetic behavior, including a possible Kosterlitz-Thouless (KT) transition at low temperature. Recently, TmMgGaO4 has been found to exhibit a perfect triangular lattice of Ising-like Tm3+ magnetic moments, providing a promising platform for investigating potential KT physics in a solid-state magnetic system. Initial studies have revealed significant diffuse magnetic scattering at low temperature, indicating the presence of short-range magnetic correlations that may hold the key to understanding the magnetic ground state of this system. Here, we utilize the magnetic pair distribution function (mPDF) technique to probe these correlations in real space via Fourier transformation of the diffuse scattering pattern. We present a magnetic model that reproduces the observed mPDF pattern with quantitative accuracy and discuss the significance of these results in the context of existing work on TmMgGaO4.

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Presenters

  • Raju Baral

    Department of Physics and Astronomy, Brigham Young University

Authors

  • Raju Baral

    Department of Physics and Astronomy, Brigham Young University

  • Benjamin Frandsen

    Brigham Young University, Department of Physics and Astronomy, Brigham Young University, Brigham Young Univ - Provo, Physics, Brigham Young University, Physics and Astronomy, Brigham Young University

  • Henry Edward Fischer

    Institut Laue-Langevin

  • Qing Huang

    University of Tennessee, Department of Physics & Astronomy, University of Tennessee, University of Tennessee, Knoxville, Department of Physics, University of Tennessee, Physics, University of Tennessee, Knoxville, Department of Physics and Astronomy, University of Tennessee, Knoxville

  • Haidong Zhou

    University of Tennessee, Department of Physics and Astronomy, University of Tennessee, Knoxville, University of Knoxville, Tennessee, Department of Physics & Astronomy, University of Tennessee, University of Tennesse, Knoxville, Physics and anstronomy, University of Tennessee, Department of Physics, University of Tennessee, Physics, University of Tennessee, Knoxville, University of Tennessee, Knoxville

  • Marcus Daum

    School of Physics, Georgia Institute of Technology, Georgia Inst of Tech

  • Zhiling Dun

    Georgia Inst of Tech, School of Physics, Georgia Institute of Technology, Physics, Georgia Institute of Technology, Georgia Institute of Technology

  • Martin Mourigal

    Georgia Inst of Tech, School of Physics, Georgia Institute of Technology, Physics, Georgia Institute of Technology, Georgia Institute of Technology