Data-driven exploration of new pressure-induced superconductivity in PbBi₂Te₄.

ABSTRACT: Candidate compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by the high-throughput first-principles calculation from an inorganic materials database named AtomWork. We focused on PbBi₂Te₄ which has the similar electronic band structure and the same crystal structure with those of a pressure-induced superconductor SnBi₂Se₄ explored by the same data-driven approach. The PbBi₂Te₄ was successfully synthesized as single crystals using a melt and slow cooling method. The core level X-ray photoelectron spectroscopy analysis revealed Pb²⁺, Bi³⁺ and Te^2- valence states in PbBi₂Te₄.

SUBMITTER: Matsumoto R 

PROVIDER: S-EPMC6319466 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature