Magnetic diffuse scattering of the triangular lattice antiferromagnet YbMgGaO4

ORAL

Abstract

YbMgGaO4, a rare-earth S=1/2 triangular lattice antiferromagnet, has been to focus of recent studies with debate from several different groups about the origin of seemingly spin-liquid behavior. The interplay of strong spin-orbit coupling and site disorder of interplane Mg2+ and Ga3+ leads to interesting magnetic diffuse scattering signatures and lack of long range magnetic ordering even down to tens of mK. In this talk, I will present recent neutron scattering data measured at Oak Ridge National Laboratory on single crystals of YbMgGaO4 using polarized neutrons on HYSPEC and diffuse scattering on CORELLI. These results will be compared to different exchange models proposed for this topical material.

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Presenters

  • Marcus Daum

    School of Physics, Georgia Institute of Technology

Authors

  • Marcus Daum

    School of Physics, Georgia Institute of Technology

  • Joseph Paddison

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

  • Zhiling Dun

    Department of Physics and Astronomy, University of Tennessee, School of Physics, Georgia Institute of Technology, School of Physics, Georgia Tech, Georgia Institute of Technology, Physics, Georgia Institute of Technology, Physics, Georgia Inst of Tech

  • Vasile Garlea

    Quantum Condensed Matter Division, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Lab, Oak Ridge National Lab

  • Yaohua Liu

    Oak Ridge National Lab, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Lab

  • Haidong Zhou

    Physics and Astronomy, Univ of Tennessee, Knoxville, Physics and Astronomy, University of Tennessee Knoxville, Department of Physics and Astronomy, University of Tennessee, Department of Physics and Astronomy, University of Tennessee Knoxville, Department of Physics & Astronomy, University of Tennessee, University of Tennessee, Physics and Astronomy, University of Tennessee, Physics, University of Tennessee, Univ of Tennessee, Knoxville, Physics and Astronomy, University of Tennessee, knoxville, Dept. of Physics and Astronomy, University of Tennessee

  • Martin Mourigal

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