Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO1−δ (Re = rare-earth metal) without fluorine doping
By Z. Ren, G. Che, Xiaoli Dong, Jie Yang, W. Lu, W. Yi, Xiaoli Shen, Zhengcai Li, Liling Sun, F. Zhou and 1 more. 2008
574 citations recorded by the source corpus.
Here we report a new class of superconductors prepared by high-pressure synthesis in the quaternary family ReFeAsO1−δ (Re=Sm, Nd, Pr, Ce, La) without fluorine doping. The onset superconducting critical temperature (Tc) in these compounds increases with the reduction of the Re atom size, and the highest Tc obtained so far is 55 K in SmFeAsO1−δ. For the NdFeAsO1−δ compound with different oxygen concentration a dome-shaped phase diagram was found.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/1a9855bf7bdd6783ecad2b5c093b657d3fa8a984
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In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Colloquium: The unexpected properties of alkali metal iron selenide superconductors (2012, background): “Materials such as LaFeAsO belong to the “1111” family, with a record critical temperature of 55 K for SmFeAsO (Ren et al., 2008).”
- Superconductivity in iron compounds (2011, methodology): “…same Tc progression by simply doping the smaller Y for La in LaFeAsO1 y. Peak Tcs found for oxygen deficiency were in NdFeAsO0:85, Tc ¼ 53:5 K and in SmFeAsO0:85, Tc ¼ 55 K (Ren et al., 2008a, using high pressure synthesis) and for the fluorine doped SmFeAsO0:9F0:1, Tc ¼ 55 K (Ren et al., 2008b).”