Van Hove singularity arising from Mexican-hat-shaped inverted bands in the topological insulator Sn-doped Bi1.1Sb0.9Te2S
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DOI: 10.1103/physrevb.101.121115
Abstract: The optical properties of Sn-doped Bi1.1Sb0.9Te2S, the most bulk-insulating topological insulator thus far, have been examined at different temperatures over a broad frequency range. No Drude response is detected in the low-frequency range down to… read more here.
Keywords: van hove; 1sb0 9te2s; bi1 1sb0; doped bi1 ... See more keywords