Structure, antiferromagnetism and superconductivity of the layered iron arsenide NaFeAs.

@article{Parker2009StructureAA,
  title={Structure, antiferromagnetism and superconductivity of the layered iron arsenide NaFeAs.},
  author={Dinah R. Parker and Michael J Pitcher and Peter J. Baker and Isabel Franke and Tom Lancaster and Stephen J Blundell and Simon J. Clarke},
  journal={Chemical communications},
  year={2009},
  volume={16},
  pages={
          2189-91
        }
}
A new layered iron arsenide NaFeAs isostructural with the superconducting lithium analogue displays evidence for the coexistence of superconductivity and magnetic ordering. 
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Lithium iron arsenide phases with compositions close to LiFeAs exhibit superconductivity at temperatures at least as high as 16 K, demonstrating that superconducting [FeAs](-) anionic layers with theExpand
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Here we report a new quaternary iron-arsenide superconductor Nd[O1?x Fx ]FeAs , with the onset resistivity transition at 51.9?K and Meissner transition at 51?K. This compound has the same crystalExpand
Superconductivity at 55 K in Iron-Based F-Doped Layered Quaternary Compound Sm[O1-xFx] FeAs
We report the superconductivity in iron-based oxyarsenide Sm[O1-xFx]FeAs, with the onset resistivity transition temperature at 55.0K and Meissner transition at 54.6 K. This compound has the sameExpand
Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO1−δ (Re = rare-earth metal) without fluorine doping
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 superconductingExpand
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TLDR
It is reported that a layered iron-based compound LaOFeAs undergoes superconducting transition under doping with F- ions at the O2- site and exhibits a trapezoid shape dependence on the F- content. Expand
Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln = La, Nd)
The crystal structure of LnFeAsO 1- y (Ln = La, Nd) has been studied by the powder neutron diffraction technique. The superconducting phase diagram of NdFeAsO 1- y is established as a function ofExpand
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  • Proceedings of the National Academy of Sciences
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TLDR
The observation of superconductivity with zero-resistance transition temperature at 8 K in the PbO-type α-FeSe compound is reported, indicating that this compound has the same, perhaps simpler, planar crystal sublattice as the layered oxypnictides. Expand
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Transverse-field muon-spin rotation measurements performed on two samples of LiFeAs demonstrate that the superfluid stiffness of the superconducting condensate in relation to its superconductingExpand
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TLDR
A muon spin rotation study on SmFeAsO(1-x)F(x), with x=0-0.30 that shows that, as in the cuprates, static magnetism persists well into the superconducting regime, suggests that the proximity to magnetic order and associated soft magnetic fluctuations, rather than strong electronic correlations in the vicinity of a Mott-Hubbard transition, may be the key ingredients of high-Tc superconductors. Expand
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