Scanning tunneling microscopy and spectroscopy studies of stanene on a Kagome antiferromagnet
ORAL
Abstract
The kagome antiferromagnet FeSn receives tremendous research attention due to the flat bands and Dirac fermions stemmed from the kagome lattice [1-3]. However, the spacing stanene layer, a single layer of tin atoms with honeycomb structure, has been neglected. It has been known to the community that stanene is an interesting 2-dimensional (2D) material proposed to be a large-gap quantum spin Hall insulator [4]. In this talk, we present the scanning tunneling microscopy/spectroscopy (STM/STS) studies of the stanene layer on the cleaved surface of FeSn. Combined with first-principle calculation and tight-binding modeling, our STM results suggest the surface stanene layer in FeSn is a highly tunable platform to explore 2D topological states of matter
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Publication: [1] J.-X. Yin, et al, Nature Communications11, 4003 (2020).<br>[2] M. Kang, et al, Nature Materials19, 163 (2020).<br>[3] Z. Lin, et al, Physical Review B 102, 155103 (2020).<br>[4] Y. Xu, Z. Gan, and S.-C. Zhang, Phys. Rev. Lett.112, 226801 (2014).
Presenters
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Zengle Huang
Rutgers University
Authors
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Zengle Huang
Rutgers University
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Zhiming Xu
Tsinghua University
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Jiaqiang Yan
Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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Brian C Sales
OAK RIDGE NATIONAL LABORATORY
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Yong Xu
Tsinghua University
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Weida Wu
Rutgers University