A new iron-based superconductor stabilized by inter-block charger transfer

A research team from Zhejiang University report the discovery of an iron-based superconductors (IBSC) BaTh2Fe4As4(N0.7O0.3)2, an intergrowth compound between BaFe2As2 and ThFeAsN0.7O0.3, on basis of a block-layer design. The result also indicates an essential role of inter-block charge transfer for stabilizing the intergrowth structure. Dominant electron-type conduction was confirmed, and bulk superconducting transition at ~22 K was demonstrated.
Source: EurekaAlert, https://www.eurekalert.org