Superconductivity in the iron selenide KxFe2Se2 (0<= x<= 1)
By Jiangang Guo, Shifeng Jin, Gang Wang, Shunchong Wang, K. Zhu, Tingting Zhou, M. He, Xiaolong Chen. 2010
153 citations recorded by the source corpus.
We report the superconductivity at above 30 K in a new FeSe-layer compound K 0.8 Fe 2 Se 2 (nominal composition) achieved by metal K intercalating in between FeSe layers. It is isostructural to BaFe 2 As 2 and possesses the highest T c for FeSe-layer materials so far under ambient pressure. Hall effect indicates the carriers are dominated by electron in this superconductor. We confirm that the observed superconductivity at above 30 K is due to this new FeSe-based 122 phase. Our results demonstrate that FeSe-layer materials are really remarkable superconductors via structure and carrier modulation.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/8dcb31c9f284cd24d218efd8aa4c572e0012025b
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In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Iron-based high transition temperature superconductors (2014, background): “[40] Guo, J, Jin, S and Wang, G et al Superconductivity in the iron selenide KxFe2Se2 (0≤x≤1.”
- Novel BiS2-based layered superconductor Bi4O4S3 (2012, background): “To date, over 50 Fe-based superconductors with a layered structure, basically composed of superconducting layers of Fe-pnictogen (Fe2As2 or Fe2P2) or Fe-chalcogen (Fe2Se2 or Fe2Te2) layers and spacer layers, have been discovered.(8-13) As introduced here, discovery of a new layered superconductor pr”
- Magnetism and its microscopic origin in iron-based high-temperature superconductors (2012, background): “Four years after the initial discovery of superconductivity in LaFeAsO1−xFx [11], there are now three major families of iron-based superconductors: the iron pnictides [8, 9], iron chalcogenides [14, 61], and alkaline iron selenides [50, 51].”