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

Sci. China Mater. 62(9), 1357-1362 (2019) 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...

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Main Authors Shao, Ye-Ting, Wang, Zhi-Cheng, Li, Bai-Zhuo, Wu, Si-Qi, Wu, Ji-Feng, Ren, Zhi, Qiu, Su-Wen, Rao, Can, Wang, Cao, Cao, Guang-Han
Format Journal Article
LanguageEnglish
Published 12.08.2019
Subjects
Physics - Materials Science
Physics - Strongly Correlated Electrons
Physics - Superconductivity
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Summary:Sci. China Mater. 62(9), 1357-1362 (2019) 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.
DOI:10.48550/arxiv.1908.03992