2014/03/31 by Shijing Tan, S. G. Tan, D. F. Shao +13
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Iron-based superconductors research #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.90.085144
published as Phys. Rev. B 90, 085144 (2014)
arxiv created 2014/05/30 · openalex publication_date 2014/08/27 · arxiv updated 2014/09/02 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have investigated the physical properties of a new layered oxyselenide Bi2YO4Cu2Se2, which crystallizes in an unusual intergrowth structure with Cu2Se2 and Bi2YO4 layers. Electric transport measurement indicates that Bi2YO4Cu2Se2 behaves metallic. Thermal transport and Hall measurements show that the type of the carriers is holelike and it may be a potential thermoelectric material at high temperatures. First-principles calculations are in agreement with experimental results and show that Bi2YO4Cu2Se2 is a quasi-two-dimensional metal. Further theoretical investigation suggests the ground states of the Bi2YO4Cu2Se2 type can be tuned by designing the blocking layers, which will enrich the physical properties of these compounds.