Superconductivity under high pressure in LaFeAsO

Abstract

Electrical resistivity measurements under high pressures up to 29 GPa were performed for oxypnictide compound LaFeAsO. We found a pressure-induced superconductivity in LaFeAsO. The maximum value of Tc is 21 K at ~12 GPa. The pressure dependence of the Tc is similar to those of LaFeAsO1-xFx series reported previously.

17 pages, 5 figures, to be published in J. Phys. Soc. Jpn Vol.77 No.11

References in corpus (6)

• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Pressure induced superconductivity in CaFe${}_2$As${}_2$
• Superconductivity up to 29 K in SrFe2As2 and BaFe2As2 at high pressures
• Evolution from Itinerant Antiferromagnet to Unconventional Superconductor with Fluorine Doping in La(O_{1-x}F_{x})FeAs Revealed by ^{75}As and ^{139}La Nuclear Magnetic Resonance
• Crystallographic Phase Transition and High-Tc Superconductivity in LaFeAsO:F
• Suppression of Magnetic Order by Pressure in BaFe2As2

Cited by in corpus (15)

• Superconductivity up to 30 K in the vicinity of quantum critical point in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Lattice collapse and quenching of magnetism in CaFe2As2 under pressure: A single crystal neutron and x-ray diffraction investigation
• Electronic Structure of Fe-Based Superconductors
• Strong Tc dependence for strained, epitaxial Ba(Fe1-xCox)2As2 thin films
• Superconductivity in LaFeAs${}_{1-x}$P${}_x$O: effect of chemical pressures and bond covalency
• Pressure-induced superconductivity in Iron pnictide compound SrFe2As2
• Superconductivity in Fluorine-Arsenide Sr_{1-x}La_xFeAsF
• Superconductivity at 23 K and Low Anisotropy in Rb-Substituted BaFe_2As_2 Single Crystals
• Microscopic origin of pressure-induced phase transitions in iron-pnictide $AF{e}_{2}A{s}_2$ superconductors: an {ab initio} molecular-dynamics study
• Successive phase transitions under high pressure in FeTe0.92
• Proximity of LaOFeAs to a magnetic instability
• Superconductivity in LnFePO (Ln = La, Pr, and Nd) single crystals
• 75As-NMR studies on La FeAsO1-xFx (x=0.14) under a pressure of 3GPa
• Pressure Study of Superconducting Oxypnictide LaFePO
• The Microstrain-Doping Phase Diagram of the Iron Pnictides Heterostructures at Atomic Limit