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arXiv · 1908.03992

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
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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.

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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. 2019-08-12. BaTh$_2$Fe$_4$As$_4$(N$_{0.7}$O$_{0.3}$)$_2$: An Iron-Based Superconductor Stabilized by Inter-Block-Layer Charge Transfer. https://doi.org/10.1007/s40843-019-9438-7

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