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Understanding Doping, Vacancy, Lattice Stability, and Superconductivity in K _x Fe_2-_y Se₂.

ABSTRACT: Metal-intercalated iron selenides are a class of superconductors that have received much attention but are less understood in comparison with their FeAs-based counterparts. Here, the controversial issues such as Fe vacancy, the real phase responsible for superconductivity, and lattice stability have been addressed based on first-principles calculations. New insights into the distinct features in terms of carrier doping have been revealed.

SUBMITTER: Liu Y

PROVIDER: S-EPMC5096254 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature

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Understanding Doping, Vacancy, Lattice Stability, and Superconductivity in K x Fe2-y Se2.

Liu Yu Y Wang Gang G Ying Tianping T Lai Xiaofang X Jin Shifeng S Liu Ning N Hu Jiangping J Chen Xiaolong X

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20160517 10

Metal-intercalated iron selenides are a class of superconductors that have received much attention but are less understood in comparison with their FeAs-based counterparts. Here, the controversial issues such as Fe vacancy, the real phase responsible for superconductivity, and lattice stability have been addressed based on first-principles calculations. New insights into the distinct features in terms of carrier doping have been revealed. ...[more]

PMID: 27840799

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