BaTh$_2$Fe$_4$As$_4$(N$_{0.7}$O$_{0.3}$)$_2$: An Iron-Based Superconductor Stabilized by Inter-Block-Layer Charge Transfer

Ye-Ting Shao; Zhi-Cheng Wang; Bai-Zhuo Li; Si-Qi Wu; Ji-Feng Wu; Zhi Ren; Su-Wen Qiu; Can Rao; Cao Wang; Guang-Han Cao

doi:10.1007/s40843-019-9438-7

paper

BaTh $_{2}$ Fe $_{4}$ As $_{4}$ (N $_{0.7}$ O $_{0.3}$ ) $_{2}$ : An Iron-Based Superconductor Stabilized by Inter-Block-Layer Charge Transfer

arXiv:1908.03992 · doi:10.1007/s40843-019-9438-7

Abstract

Recently, An electron-doped 12442-type iron-based superconductor BaTh $_{2}$ Fe $_{4}$ As $_{4}$ (N $_{0.7}$ O $_{0.3}$ ) $_{2}$ has been successfully synthesized with high-temperature solid-state reactions on basis of a structural design. The inter-block-layer charge transfer between the constituent units of "BaFe $_{2}$ As $_{2}$ " and "ThFeAsN $_{0.7}$ O $_{0.3}$ " was found to be essential to stabilize the target compound. Dominant electron-type conduction and bulk superconducting transition at ~22 K were demonstrated.

16 pages in total. 5 figures, 1 table (main article); 6 figures, 3 tables (Supporting Information)

BaTh2​Fe4​As4​(N0.7​O0.3​)2​: An Iron-Based Superconductor Stabilized by Inter-Block-Layer Charge Transfer

Abstract

BaTh $_{2}$ Fe $_{4}$ As $_{4}$ (N $_{0.7}$ O $_{0.3}$ ) $_{2}$ : An Iron-Based Superconductor Stabilized by Inter-Block-Layer Charge Transfer