The observations of unusual edge properties in scanning tunnelling spectroscopy and the predicted band structure in photoemission spectra of a monolayer FeSe superconductor reveal its non-trivial topological nature.
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Tsai, WF., Lin, H. The integrity of two sides. Nature Mater 15, 927–928 (2016). https://doi.org/10.1038/nmat4700
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DOI: https://doi.org/10.1038/nmat4700
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