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Beyond Single Tetrahedron Model of the Breathing Pyrochlore Material Ba<sub>3</sub>Yb<sub>2</sub>Zn<sub>5</sub>O<sub>11</sub>

ORAL

Abstract

Breathing pyrochlore systems are composed of corner-sharing tetrahedra of different sizes pointing in opposing directions, leading to different intra- and inter-tetrahedra exchange interactions and the emergence of the Dzyaloshinskii-Moriya interaction due to loss of inversion symmetry. They are predicted to host exotic physics including quantum spin ice, quantum spin liquid, and field-tunable Weyl magnons. In this talk we will present single-crystal field-dependent neutron scattering measurements as well as heat capacity, ultra-sensitive magnetic susceptibility, thermal conductivity, and µSR measurements on Yb-based breathing pyrochlore system, Ba3Yb2Zn5O11. We will also present a theoretical model that can effectively describe some of our experimental findings.

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Presenters

  • Sachith Dissanayake

    Department of Physics, Duke University, Oak Ridge National Lab, Duke University, Oak Ridge National Laboratory

Authors

  • Sachith Dissanayake

    Department of Physics, Duke University, Oak Ridge National Lab, Duke University, Oak Ridge National Laboratory

  • Zhenzhong Shi

    Department of Physics, Duke University, Duke University

  • Jeffrey Gary Rau

    Department of Physics, University of Windsor

  • William Steinhardt

    Duke University, Department of Physics, Duke University

  • Rabindranath Bag

    Department of Physics, Duke University, Physics, Indian Institute of Science education and research, Duke University, Indian Institute of Science Education and Research -Pune

  • Nicholas Butch

    National Institute of Standards and Technology, NIST Center for Neutron Research, National Institute of Standards and Technology, Center for Neutron Research, National Institute of Standards and Technology, NCNR, National Institute for Standard and Technology, NIST/University of Maryland, Center of Neutron Research, National Institute of Standards and Technology, NIST, Center for Neutron Research, National Institute of Standards and Technology, National Institute of Standards and Technology, NIST Center for Neutro Research, National Institute of Standards and Technology, University of Maryland

  • Matthias D Frontzek

    Neutron Scattering Division, Oak Ridge National Laboratory

  • Andrey Podlesnyak

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

  • David E Graf

    National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Lab, Florida State University, National High Magnetic Field Laboratory, Tallahassee and Florida State University, National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Laboratory (FSU), Department of Physics, Florida State University, National High Magnetic Field Laboratory and Department of Physics, Florida State University, National High Magnetic Field Lab, National High Magnetic Field Laboratory, Tallahassee, FL, CMS, National High Magnetic Laboratory

  • Eun Sang Choi

    National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Laboratory, National High Magnetic Field Laboratory and Department of Physics, Florida State University, National High Magnetic Field Lab, Physics, Florida State University, National High Field Magnet Laboratory, Florida Sate University

  • Franz Lang

    Physics, University of Oxford, Department of Physics, University of Oxford, Univ of Oxford

  • Stephen Blundell

    Department of Physics, University of Oxford, University of Oxford, Physics, University of Oxford, Univ of Oxford

  • Michel J P Gingras

    Department of Physics and Astronomy, University of Waterloo

  • Sara Haravifard

    Department of Physics and Department of Mechanical Engineering & Materials Science, Duke University, Department of Physics and Department of Mechanical Engineering and Materials Science, Duke University, Duke University, Department of Physics, Duke University, Physics & Mechanical Engineering and Material Sciences, Duke University, Department of Physics and Department of Mechanical Engineering & Materials, Duke University