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Regularities of the quantum spin Hall phase formation in three-dimensional tetradymite-like topological insulator thin films

AuthorsMenshchikova, Tatiana V.; Silkina, O Yu.; Silkin, Igor V.; Kuznetsov, V. M.; Chulkov, Eugene V. CSIC ORCID
Issue Date2017
PublisherAmerican Physical Society
CitationPhysical Review B 96(16): 165441 (2017)
AbstractWe present first-principles calculations of electronic structure and topological properties of thin films of tetradymite-like binary, ternary, and quaternary compounds. Two-dimensional topological insulators were found, including two septuple layer films of PbBi2Te4 with large band gap. We demonstrate that the Pb-based thin films inherit Z2 dependence on the film thickness from the >parent> quintuple-layer compounds. An effective way to induce the topological phase transition in the trivial thin films is proposed that does not require substantial changes in the in-plane lattice parameter and surface crystal structure.
Publisher version (URL)https://doi.org/10.1103/PhysRevB.96.165441
Identifiersdoi: 10.1103/PhysRevB.96.165441
e-issn: 2469-9969
issn: 2469-9950
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