de Haas-van Alphen effect of correlated Dirac states in kagome metal Fe3Sn2

ORAL

Abstract

We report the study of the de Haas-van Alphen effect in the ferromagnetic kagome metal Fe3Sn2, where massive Dirac electronic states have been identified by spectroscopic means [1,2]. Through magneto-quantum oscillations we observe two quasi-2D Fermi surfaces that are consistent with the quasi-2D double Dirac cone structures. Moreover, these Fermi surfaces appear to change following the rotation of the soft ferromagnetic moment, implying a strong coupling of the Dirac states with the ferromagnetic order through spin-orbit coupling. Finally, these observations establish the bulk nature of the Dirac bands and offer unique insight into lattice-borne topological electronic states. These results are summarized in arxiv/1809.11159 [3].

[1] L. Ye, M. Kang et al., Nature 555, 638-642 (2018)
[2] J. X. Yin et al., Nature 562, 91–95 (2018)
[3] L. Ye et al., arxiv/1809.11159

*We acknowledge support by support by the STC Center for Integrated Quantum Materials, NSF grant number DMR-1231319 and the Tsinghua Education Foundation. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement No.DMR-1157490 and DMR-1644779, the State of Florida and the U.S. Department of Energy.

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Presenters

  • Linda Ye

    • Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology

Authors

  • Linda Ye

    • Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology

  • Mun Keat Chan

    • Pulsed Field Facility, NHMFL
    • MPA-MAG, Los Alamos National Laboratory, Los Alamos, USA
    • National High Magnetic Field Laboratory, LANL
    • Los Alamos National Laboratory

  • Ross McDonald

    • Los Alamos National Laboratory
    • Los Alamos National Labs
    • National High Magnetic Field Laboratory, LANL
    • Pulsed Field Faclity, National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory

  • David E Graf

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Lab, Tallahassee, FL
    • National High Magnetic Field Laboratory and Department of Physics, Florida State University
    • National High Magnetic Field Lab
    • NHMFL, Tallahassee, FL, United States
    • Florida State University
    • National High Magnetic Field Laboratory, Florida State University
    • NHMFL-FSU
    • National High Magnetic Field Laboratory and Florida State University
    • NHMFL

  • Min Gu Kang

    • Massachusetts Institute of Technology, Department of Physics
    • Massachusetts Institute of Technology

  • Junwei Liu

    • Hong Kong University of Science and Technology
    • The Hong Kong University of Science and Technology
    • Department of Physics, Hong Kong University of Science and Technology

  • Takehito Suzuki

    • MIT
    • Massachusetts Institute of Technology
    • Physics, Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology

  • Riccardo Comin

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology, Department of Physics
    • Department of Physics, Massachusetts Institute of Technology
    • Stuart Blussom Quantum Matter Institute, University of British Columbia

  • Liang Fu

    • Massachusetts Institute of Technology
    • MIT
    • Department of Physics, Massachusetts Institute of Technology

  • Joseph Checkelsky

    • MIT
    • Massachusetts Institute of Technology
    • Physics, Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology