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

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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