Superconductivity at 41.0 K in the F-doped LaFeAsO1-xFx

Abstract

Here we report the superconductivity in the LaFeAsO1-xFx system prepared by high pressure synthesis. The highest onset superconducting transition temperature (Tc) in this La-based system is 41.0 K with the nominal composition of LaFeAsO1-xFx (x = 0.6), which is higher than that reported previously by ambient pressure synthesis. The increase of Tc can be attributed to the further shrinkage of crystal lattice that causes the stronger chemical pressure on the Fe-As plane, which is induced by the increased F-doping level under high pressure synthesis.

References in corpus (5)

• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• Superconductivity and Phase Diagram in the Iron-based Arsenic-oxides ReFeAsO1-delta (Re = rare earth metal) without F-Doping
• Superconductivity in iron-based F-doped layered quaternary compound Nd[O1-xFx]FeAs
• Superconductivity at 52 K in iron-based F-doped layered quaternary compound Pr[O1-xFx]FeAs

Cited by in corpus (11)

• High - Temperature Superconductivity in Iron Based Layered Compounds
• Structural and magnetic phase transitions in the ternary iron arsenides SrFe2As2 and EuFe2As2
• Upper critical fields well above 100 T for the superconductor SmFeAsO${}_{0.85}$F${}_{0.15}$ with T${}_c$ = 46 K
• Anisotropic three-dimensional magnetism in CaFe2As2
• Coexistence of two order parameters and a pseudogaplike feature in the iron-based superconductor LaFeAsO_(1-x)F_x
• Anion height dependence of Tc and density of states in iron based superconductors
• Electronic and lattice dynamical properties of the iron-based superconductors LiFeAs and NaFeAs
• Theoretical investigation of magnetic order in ReOFeAs, Re = Ce, Pr
• Very high critical field and superior Jc-field performance in NdO0.82F0.18FeAs with Tc of 51 K
• One-step atmospheric pressure synthesis of the ground state of Fe based LaFeAsO1-d superconductor
• Flux pinning mechanism in NdFeAsO0.82F0.18 superconductor: Thermally activated flux flow and charge carrier mean free path fluctuation pinning