A weak topological insulator state in quasi-one-dimensional bismuth iodide

A weak topological insulator state in quasi-one-dimensional bismuth iodide

A weak topological insulator state in quasi-one-dimensional bismuth iodide, Published online: 11 February 2019; doi:10.1038/s41586-019-0927-7

Angle-resolved photoemission spectroscopy is used to characterize the surface states of bismuth iodide, providing experimental evidence of a weak topological insulator state that had previously been only theoretically predicted.

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