STM Investigation of Surface Reconstruction of FeSn

ORAL

Abstract

Recently kagome compounds attract lots of research interest due to the flat bands, Dirac fermion and the strong electronic correlation due to the kagome lattice[1-4]. However, there is a lack of study of the surface stability of kagome lattice against high temperature. In this talk, we present the study of the surface reconstruction of kagome Fe3Sn layer of antiferromagnetic metal FeSn with scanning tunneling microscope (STM). We heat FeSn to a series of temperatures below room temperature and investigate the surface morphology evolution. Our results shed light on the stability of kagome surface and thermodynamics of defect formation.

*The STM at Rutgers was supported by the ARO Award (Grant No. W911NF-20-1-0108).

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Publication: [1] J.-X. Yin, et al., Nature Communications11, 4003 (2020).
[2] M. Kang, et al., Nature Materials19, 163 (2020).
[3] Z. Lin, et al., Physical Review B 102, 155103 (2020).
[4] L. Ye, et al., Nature 638-642, 555(7698) (2018)

Presenters

  • Wenqing Chen

    • Rutgers University

Authors

  • Zengle Huang

    • Rutgers University

  • Wenqing Chen

    • Rutgers University

  • Jiaqiang Yan

    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  • Brian C Sales

    • OAK RIDGE NATIONAL LABORATORY

  • Weida Wu

    • Rutgers University