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

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