Electronic structure of iron-based superconductors with thick perovskite-blocking layers

厚いペロブスカイト型ブロック層を持つ鉄系超伝導体の電子状態

中村 博樹  ; 町田 昌彦  

Nakamura, Hiroki; Machida, Masahiko

Since superconductivity in LaFeAsOF was found, various families of iron-based superconductors have been discovered. Recently, a new type whose blocking layer structure is perovskite-based has been reported, and Tc of this family has reached almost 40K. In this paper, we calculate electronic structures of the iron-based superconductors with thickperovskite layers by using first-principles density functional theory and compare them with those of other iron-based superconductors. We also discuss ability of application of those superconductors.