Superconductivity at 52 K in iron-based F-doped layered quaternary compound Pr[O1-xFx]FeAs

Abstract

Since the discovery of copper oxide superconductor in 1986 [1], extensive efforts have been devoted to the search of new high-Tc superconducting materials, especially high-Tc systems other than cuprates. The recently discovered quaternary superconductor La[O1-xFx]FeAs with the superconducting critical transition Tc of 26 K [2], which has a much simple layered structure compared with cuprates, has attracted quick enthusiasm and is going to become a new high-Tc system [3-6]. Here we report the discovery of bulk superconductivity in the praseodymium-arsenide oxides Pr[O1-xFx]FeAs with an onset drop of resistivity as high as 52 K, and the unambiguous zero-resistivity and Meissner transition at low temperature, which will place these quaternary compounds to another high-Tc superconducting system explicitly.

4 pages

References in corpus (1)

• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs

Cited by in corpus (26)

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• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• The BCS-like gap in superconductor SmFeAsO_0.85F_0.15
• First Order Phase Transition and Superconductivity in BaNi2As2 Single Crystals
• Evidence for two distinct scales of current flow in polycrystalline Sm and Nd iron oxypnictides
• Intrinsic Properties of Stoichiometric LaOFeP
• SrFeAsF as a parent compound for iron pnictide superconductors
• Nuclear magnetic relaxation and superfluid density in Fe-pnictide superconductors: An anisotropic \pm s-wave scenario
• Cobalt-substitution-induced Superconductivity in a New Compound with ZrCuSiAs-type Structure, SrFeAsF
• Superconductivity above 50 K in Tb${}_{1-x}$Th${}_x$FeAsO
• Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs
• Fermi Surface and Band Renormalization in (Sr,K)Fe${}_2$As${}_2$ Superconductor from Angle-Resolved Photoemission Spectroscopy
• Thermal properties of SmFeAs(O1-xFx) as probe of the interplay between electrons and phonons
• Superconductivity at 41.0 K in the F-doped LaFeAsO1-xFx
• Orbital fluctuation mechanism for superconductivity in iron-based compounds
• Effective Hamiltonian for FeAs based superconductors
• Doping evolution of itinerant magnetic excitations in Fe-based oxypnictides
• Pressure Effects on the Superconducting and Spin-Density-Wave States of the Newly Discovered Sm(O1-xFx)FeAs
• A predictive bond order model connects covalent superconductivity, including cuprates, oxypnictides or HfN based materials
• Electronic structure of LaFe1-xCoxAsO from first principle calculations
• One-step atmospheric pressure synthesis of the ground state of Fe based LaFeAsO1-d superconductor
• Structural, magnetic and electronic properties of quaternary oxybismuthides LaOMBi (where M = Sc, Ti ... Ni, Cu) - possible parent phases for new superconducting materials
• Cu, Pu and Fe high Tc superconductors: all the same mechanism!
• Synthesis and Microstructural Studies of Iron Based LaO1-xFxFeAs Superconducting Materials