Superconducting, surface and anomalous electron transport properties of BaNbO3−x films

Abstract Review of superconducting ( T c , H c 2 (T), J c ), electron transport R s ( T ), surface (XPS, UPS) and structural (XRD, RBS) properties of thin films of a novel superconductor BaNbO 3− x on different substrates is presented. Superconducting films have been obtained when grown on the Al 2 O 3 with T c =14 K , J c ≈1×10 4 A cm −2 and large H c 2 (0)=28 T . At the same time, films on NdGaO 3 exhibit behavior typical to granular superconductors.