2016
DOI: 10.48550/arxiv.1611.09535
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Stability of metallic edges and Fermi-level pinning in transition-metal dichalcogenide nanoribbons

Abstract: Nanoribbons of MoS2 present a unique electronic structure that consists of a semiconducting bulk bounded by metallic edges; same holds for other Transition-Metal Dichalcogenides (TMDs) (Mo-,W-,S2,Se2). We perform first-principles calculations for TMD nanoribbons with reconstructed zig-zag metal terminated edges that contain chalcogen adatoms. All nanorobbons have possitive edge energies when the chemical potential of chalcogens is close to the energy of solids, and negative edge energies for high chemical pote… Show more

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