Low-carrier Density and Fragile Magnetism in a Kondo Lattice System

ORAL

Abstract

Known low-carrier Kondo systems evolve from metallic non-magnetic analogues, while a recent theoretical model for the dilute carrier Kondo limit predicts semimetallic behavior. Very few 4f low-carrier Kondo systems have been reported, mostly based on Ce. In this talk, I will show evidence for low-carrier Kondo behavior in Yb3Ir4Ge13 with a low carrier background as illustrated by the non-magnetic analogue Lu3Ir4Ge13. A fragile magnetic state occurs in the Yb compound at very low temperatures, which, together with the semimetalic behavior, can be understood within the framework of the dilute-carrier limit of a Kondo lattice model. An entirely new regime of the Kondo effect is discovered, where the fragile magnetism can also be tuned in a non-Fermi liquid fashion through Lu-for-Yb substitution.

*The Gordon and Betty Moore Foundation EPiQS Initiative through grant GBMF 4417

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Presenters

  • Emilia Morosan

    • Physics and Astronomy, Rice University
    • Rice University
    • Physics & Astronomy, Rice University

Authors

  • Binod Rai

    • Physics and Astronomy, Rice University

  • Iain Oswald

    • Chemistry, University of Texas at Dallas

  • Wenjing Ban

    • Physics, Peking University

  • Chien-Lung Huang

    • Physics and Astronomy, Rice University
    • Rice University

  • Vaideesh Loganathan

    • Physics and Astronomy, Rice University
    • Rice University

  • Alannah Hallas

    • Physics and Astronomy, Rice University
    • McMaster Univ
    • Rice University

  • Murray Wilson

    • McMaster University
    • Physics and Astronomy, McMaster University
    • Department of Physics and Astronomy, McMaster Univ
    • Physics and Atmospheric Science, Dalhousie University

  • Graeme Luke

    • McMaster University
    • Physics and Astronomy, McMaster University
    • Department of Physics and Astronomy, McMaster Univ
    • Department of Physics and Astronomy, McMaster University
    • Physics and Astronomy, McMaster Univ
    • MacMaster University
    • Physics, McMaster University
    • McMaster Univ

  • Leland Harriger

    • NIST Center for Neutron Research
    • NCNR, NIST
    • National Institute of Standards and Technology
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • NIST center for Neutron Scattering

  • Qingzhen Huang

    • NIST Center for Neutron Research

  • Yu Li

    • Physics and Astronomy, Rice University
    • Rice University

  • Sami Dzsaber

    • Physics, Institute of Solid State Physics, Vienna University of Technology

  • Julia Chan

    • Chemistry, University of Texas at Dallas

  • Nan Lin Wang

    • Physics, Peking University

  • Silke Buehler-Paschen

    • Physics, Institute of Solid State Physics, Vienna University of Technology
    • Vienna University of Technology
    • Institute of Solid State Physics, Vienna University of Technology

  • Jeffrey Lynn

    • NIST Center for Neutron Research
    • NIST center for Neutron Research
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology
    • NIST
    • NCNR, NIST -Natl Inst of Stds & Tech

  • Andriy Nevidomskyy

    • Department of Physics and Astronomy, Rice University
    • Physics and Astronomy, Rice University
    • Department of Physics and Astronomy, Rice Univ
    • Rice University

  • Pengcheng Dai

    • Physics and Astronomy, Rice University
    • Rice University
    • Physics, Rice University
    • Rice Univeristy

  • Qimiao Si

    • Department of Physics and Astronomy, Rice University
    • Physics and Astronomy, Rice Univ
    • Physics and Astronomy, Rice University
    • Rice Univ
    • Rice Universiry
    • Physics, Rice University
    • Rice University
    • Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University
    • Physics and Astronomy, and Rice Center for Quantum Materials, Rice University
    • Department of Physics and Astronomy, Rice Univ

  • Emilia Morosan

    • Physics and Astronomy, Rice University
    • Rice University
    • Physics & Astronomy, Rice University