Local magnetism in a correlated Kagome magnet with massive Dirac Fermions

ORAL

Abstract

Recent photoemission and scanning tunneling experiments revealed that Fe3Sn2, a strongly-correlated Kagome magnet, features massive Dirac fermions and an intrinsic electronic nematicity [1, 2]. DFT calculations show that the Dirac mass depends significantly on the local magnetic moment. The electronic nematicity also relates to local magnetism through the spin-orbital coupling. Here, we present our small-angle neutron scattering and angle-resolved charge transport results in combination with DFT calculations to characterize the complex role of local magnetism in Fe3Sn2.

1. Ye, L. et al., Nature 555, 638 (2018)
2. Yin, J., et al., Nature 562, 91 (2018)

*Work at BNL was supported by Office of BES, U.S. DOE under Contract No. DE-SC0012704. Research conducted at ORNL’s SNS was sponsored by the SUFD, Office of BES, U.S. DOE.

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Presenters

  • Yangmu Li

    • Brookhaven National Laboratory
    • CMPMS, Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory

Authors

  • Yangmu Li

    • Brookhaven National Laboratory
    • CMPMS, Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory

  • Qi Wang

    • Physics Department, Renmin University of China

  • Ryan Desautels

    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • Large Scale Structures Division, Oak Ridge National Laboratory

  • Qianheng Du

    • CMPMS, Brookhaven National Laboratory
    • Department of Materials Science and Chemical Engineering, Stony Brook University

  • Weijun Ren

    • Institute of Metal Research, Chinese Academy of Sciences

  • Zhidong Zhang

    • Institute of Metal Research, Chinese Academy of Sciences

  • Cedomir Petrovic

    • CMPMS, Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • CMPMSD, Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory

  • Lisa DeBeer-Schmitt

    • Neutron Science Directorate, Oak Ridge National Laboratory
    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory

  • Igor Zaliznyak

    • Brookhaven National Laboratory
    • CMPMS, Brookhaven National Laboratory

  • Weiguo Yin

    • Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • CMPMS, Brookhaven National Laboratory

  • Hechang Lei

    • Physics Department, Renmin University of China
    • Brookhaven National Laboratory
    • Renmin University of China
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory

  • John Tranquada

    • Brookhaven National Laboratory
    • CMPMS, Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
    • Brookhaven Natl Lab