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