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