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Issue 12, 2019
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Quantum transport properties of single-crystalline Ag2Se0.5Te0.5 nanowires as a new topological material

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Abstract

We report a ternary silver chalcogenide, Ag2Se0.5Te0.5, as a new topological material with improved quantum transport properties. Single-crystalline nanostructures of ternary silver chalcogenides Ag2SexTe1−x are synthesized with a tunable chemical composition via the chemical vapor transport method. Quantum transport studies reveal that Ag2Se0.5Te0.5 nanowires present topological surface states with higher electron mobility and longer mean free path compared to binary Ag-chalcogenides. First-principles calculations also indicate that Ag2Se0.5Te0.5 is a topological insulator, and the observed enhancement in transport properties could imply reduced bulk carrier contribution in the new ternary silver chalcogenide.

Graphical abstract: Quantum transport properties of single-crystalline Ag2Se0.5Te0.5 nanowires as a new topological material

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Publication details

The article was received on 10 Jan 2019, accepted on 26 Feb 2019 and first published on 28 Feb 2019


Article type: Communication
DOI: 10.1039/C9NR00288J
Nanoscale, 2019,11, 5171-5179

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    Quantum transport properties of single-crystalline Ag2Se0.5Te0.5 nanowires as a new topological material

    M. Kim, J. Kim, I. Lee, W. H. Han, Y. C. Park, W. Y. Kim, B. Kim and J. Suh, Nanoscale, 2019, 11, 5171
    DOI: 10.1039/C9NR00288J

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