Elastic and Inelastic Neutron Scattering Study of the Triangular Lattice Ising Antiferromagnet TmMgGaO4

ORAL

Abstract

The LnMgGaO4 family of materials (with Ln= Yb3+, Er3+, and Tm3+) has been the focus of recent studies in frustrated magnetism due to the combination of anisotropic exchange interactions from strong spin obit coupling, geometrical frustration, and inherent site disorder of Mg2+ and Ga3+. In order to further understand the original compound, YbMgGaO4, we have begun to investigate how the non-Kramers ion Tm3+ differs from Yb3+ when placed in a similar crystal structure. TmMgGaO4 displays a strong Ising behavior and magnetic scattering at the K-point of the triangular Brillouin zone at T= 0.05K. In this talk, I will present recent neutron scattering results on single-crystals of TmMgGaO4 that elucidate the temperature and magnetic field dependence of spin correlations in that material.

*This work was supported by NSF Grant DMR 1750186.

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Presenters

  • Marcus Daum

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

Authors

  • Marcus Daum

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

  • Zhiling Dun

    • School of Physics, Georgia Institute of Technology
    • Georgia Institute of Technology
    • School of Physics, Georgia Tech
    • University of Tennessee
    • Department of Physics, University of Tennessee

  • Haidong Zhou

    • University of Tennessee
    • Department of Physics and Astronomy, University of Tennessee
    • University of Tennessee, Knoxville
    • Physics, University of Tennessee, Knoxville, TN, United States
    • Physics, University of Tennessee
    • Department of Physics and Astronomy, The University of Tennessee, Knoxville
    • Department of Physics and Astronomy, University of Tennessee, Knoxville
    • Department of Physics, University of Tennessee

  • Martin Mourigal

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