The properties of bismuth have long defied expectation, casting it just outside the bounds of almost every category. Now topology joins the list, as its electronic structure once deemed trivial turns out to have higher-order topology.
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Ast, C.R. A little bit of everything. Nature Phys 14, 874–875 (2018). https://doi.org/10.1038/s41567-018-0258-x
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DOI: https://doi.org/10.1038/s41567-018-0258-x
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