Magnetic Field Induced Fermi Liquid In a Candidate Topological Kondo Insulator

ORAL

Abstract

Kondo insulators are expected to undergo an insulator-to-metal phase transition under strong magnetic fields. We show that Ce3Bi4Pd3 is a narrow gap Kondo insulator. Our high magnetic pulse-field transport and magnetization experiments reveal the destruction of Kondo coupling and the closing of the Kondo gap at a critical magnetic field, Bc ≈ 11 T. A Fermi liquid state emerges for fields beyond Bc, with a decrease in electronic correlations.

*Supported by LANL Directors Postdoctoral Funding, US DOE "Science of 100 tesla" BES program, US DOE BES DMSE "Quantum Fluctuations in Narrow Band Systems" project, LDRD 20180137ER, 20180025DR, XWPF, projects. NHMFL supported by NSF DMR-1157490 and DMR-1644779, the State of Florida and the U.S. Department of Energy. LA-UR-19-30540.

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Presenters

  • Satya Kushwaha

    • Los Alamos National Laboratory

Authors

  • Satya Kushwaha

    • Los Alamos National Laboratory

  • Mun K. Chan

    • Los Alamos National Laboratory
    • Pulse Field Facility, National High Magnetic Field Laboratory, Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, LANL
    • University of Minnesota
    • NHMFL

  • Joonbum Park

    • Los Alamos National Laboratory
    • Max Planck Institute for Chemical Physics of Solids

  • Sean Thomas

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Eric Bauer

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab
    • Condensed Matter and Magnet Science Group, Los Alamos National Laboratory
    • Los Alamos National Laboratory, Los Alamos

  • Joe D Thompson

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Filip Ronning

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab
    • Condensed Matter and Magnet Science Group, Los Alamos National Laboratory

  • Priscila Rosa

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab
    • Los Alamos National Laboratory, USA

  • Neil Harrison

    • Los Alamos National Laboratory
    • NHMFL, Los Alamos National Laboratory
    • Los Alamos Natl Lab