Superconductivity and Phase Diagram in the Iron-based Arsenic-oxides ReFeAsO1-delta (Re = rare earth metal) without F-Doping

Abstract

Here we report a new class of superconductors prepared by high pressure synthesis in the quaternary family ReFeAsO1-delta (Re = Sm, Nd, Pr, Ce, La) without fluorine doping. The onset superconducting critical temperature (Tc) in these compounds increases with the reduction of Re atom size, and the highest Tc obtained so far is 55 K in SmFeAsO1-delta. For the NdFeAsO1-delta system with different oxygen concentration a dome-shaped phase diagram was found.

References in corpus (1)

• Superconductivity in iron-based F-doped layered quaternary compound Nd[O1-xFx]FeAs

Cited by in corpus (191)

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• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
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• Pressure-induced volume-collapsed tetragonal phase of CaFe2As2 as seen via neutron scattering
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• Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides
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• Phase transitions in LaFeAsO: structural, magnetic, elastic, and transport properties, heat capacity and Mossbauer spectra
• Structure and superconductivity of LiFeAs
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• Magnetism in Fe-based superconductors
• Superconductivity induced by Ni doping in BaFe${}_2$As${}_2$
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