Neutron scattering and thermodynamics studies of Tb-based Shastry-Sutherland Lattice compound

ORAL

Abstract

The Shastry-Sutherland lattice (SSL) is a fascinating two-dimensional magnetic system, consisting of orthogonal dimers with competing antiferromagnetic intra- and interdimer couplings, J and J', respectively. SSL systems have attracted considerable attention due to their complex phase diagrams, which display a wide range of magnetic phases, including dimerized states, plaquette phases, and fractional magnetization plateaus. In this study, we explore the insulating rare-earth SSL compound Tb₂Be₂GeO₇ using thermodynamic, magnetization, and neutron scattering techniques. Our results uncover a novel magnetization plateau at M/Msaturation = 1/2, along with the unexpected observation of 'extra' entropy release.

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Presenters

  • Lalit Yadav

    • Duke University

Authors

  • Lalit Yadav

    • Duke University

  • Rabindranath Bag

    • Duke University

  • Matthew Ennis

    • Duke University

  • Clarina R Dela Cruz

    • Oak Ridge National Laboratory

  • Alexander I Kolesnikov

    • Oak Ridge National Laboratory

  • Matthew Brandon Stone

    • Oak Ridge National Laboratory
    • ORNL

  • Ross Stewart

    • STFC Rutherford Appleton Laboratory
    • ISIS Neutron and Muon Source
    • STFC Rutherford Appleton Laboratory, ISIS Neutron and Muon Facility, Didcot, U.K.

  • Afonso Dos Santos Rufino

    • Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

  • Frederic Mila

    • École Polytechnique Fédérale de Lausanne