Superconductivity under high pressure in LaFeAsO
H. Okada, K. Igawa, H. Takahashi, Y. Kamihara, M. Hirano, H. Hosono,, K. Matsubayashi, and Y. Uwatoko
TL;DR
This study reports the induction of superconductivity in LaFeAsO under high pressure, reaching a maximum Tc of 21 K at 12 GPa, with pressure dependence similar to fluorine-doped variants.
Contribution
First demonstration of pressure-induced superconductivity in LaFeAsO with detailed Tc behavior up to 29 GPa.
Findings
Superconductivity appears in LaFeAsO under high pressure.
Maximum Tc of 21 K at approximately 12 GPa.
Pressure dependence of Tc resembles fluorine-doped LaFeAsO series.
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.
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