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

Abstract

The recently discovered quaternary arsenide oxide superconductor La[O1-xFx]FeAs with the superconducting critical transition temperature (Tc) of 26 K [1], has been quickly expanded to another high-Tc superconducting system beyond copper oxides by the replacement of La with other rare earth elements, such as Sm, Ce, and Pr etc. [2-4], and the Pr[O1-xFx]FeAs has become to be the first non-cuprate superconductor that holding a Tc above 50 K. All these arsenide (including phosphide) superconductors formed in a same tetragonal layered structure with the space group P4/nmm which has an alternant stacked Fe-As layer and RO (R = rare earth metals) layer. Here we report the discovery of another superconductor in this system, the neodymium-arsenide Nd[O1-xFx]FeAs with an resistivity onset Tc of 51.9 K, which is the second non-cuprate compound that superconducts above 50 K.

References in corpus (1)

• A Generic Two-band Model for Unconventional Superconductivity and Spin-Density-Wave Order in Electron and Hole Doped Iron-Based Superconductors

Cited by in corpus (292)

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• Electronic structure and Fermi surface character of LaONiP from first principles
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• Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO
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• Pressure effects on FeSe family superconductors
• Tunable interplay between 3d and 4f electrons in Co-doped iron pnictides
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• Band structure of SrFeAsF and CaFeAsF as parent phases for a new group of oxygen-free FeAs superconductors
• Analysis of transport properties of iron pnictides: spin-fluctuation scenario
• Electronic phase diagram of NdFe1-xRhxAsO
• Experimental observation of an anomalous peak in isofield M(T) curves in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ resembling the fish-tail in $M$($H$) curves further suggesting a possible phase transition in the irreversible regime
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• Unconventional Low-Energy Excitations of Cuprate Superconductors
• Determination of characteristic muon precession and relaxation signals in FeAs and FeAs2, possible impurity phases in pnictide superconductors
• Constrain on possible pairing symmetry in a two-orbital model of FeAs-based superconductors
• Inelastic neutron scattering study of crystal field excitations of Nd3+ in NdFeAsO
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• Insulating and metallic spin glass in K${}_x$Fe${}_{2-\delta -y}$Ni${}_y$Se${}_2$ (0.06 $\le$ $y$ $\le$ 1.44) single crystals
• Possibility of local pair existence in optimally doped SmFeAsO(1-x) in pseudogap regime
• Revisiting the phase diagram of LaFe${}_{1-x}$Co${}_x$AsO on single crystals by thermodynamic methods
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• Superconductivity in La1-xSmxO0.5F0.5BiS2 (x = 0.2, 0.8) under hydrostatic pressure
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• Soft phonons and structural phase transition in superconducting Ba0.59K0.41BiO3
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• Structural properties, defects and structural phase transition in the ROFeM (R=La, Nd; M=As, P) materials
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• Multiband effects on the conductivity for a multiband Hubbard model
• Evolution of superconductivity in PrFe1-xCoxAsO with x = 0.0 to 1.0
• Superconducting Mechanism through direct and redox layer doping in Pnictides
• Fluorine-substitution-dependent phase diagram and superconducting properties of Sm-based oxypnictides synthesized by a high-pressure growth technique
• Magnetocrystalline anisotropic effect in GdCo${}_{1-x}$Fe${}_x$AsO ($x=0,0.05$)