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. 2016 Nov 25;11:525. doi: 10.1186/s11671-016-1731-z

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 6 — Electronic structures of the a monolayer graphene, b monolayer stanene, and c bilayer $S n (3) / G (\sqrt{31})$ . The red line represents the Fermi level, which set to be zero. The relative contribution of stanene is coded by color: blue (red) corresponds to the state originating only from stanene (graphene). The substrate-induced gap is 67 meV for Sn (Γ) and 3 meV for graphene (K)