Superconductivity in the $\eta$-carbide-type oxides Zr4Rh2Ox

KeYuan Ma, Jorge Lago, Fabian O. von Rohr

We report on the synthesis and the superconductivity of Zr${}_4$Rh${}_2$O${}_x$ ($x$ = 0.4, 0.5, 0.6, 0.7, 1.0). These compounds crystallize in the $\eta$-carbide structure, which is a fi…