Superconductivity at 36 K in Gadolinium-arsenide Oxides GdO${}_{1-x}$F${}_x$FeAs

In this paper we report the fabrication and superconducting properties of GdO${}_{1-x}$F${}_x$FeAs. It is found that when x is equal to 0.17, GdO${}_{0.83}$F${}_{0.17}$FeAs is a superconductor with the onset transition temperature T${}_c^{on}\approx$ 36.6K. Resistivity anomaly near 130K was observed for all samples up to x = 0.17, such a phenomenon is similar to that of LaO${}_{1-x}$F${}_x$FeAs. Hall coefficient indicates that GdO${}_{0.83}$F${}_{0.17}$FeAs is conducted by electron-like charge carriers.