Formation of Nd-Ce-Cu-O Thin Films by Activated Reactive Evaporation

Abstract

Superconducting Nd-Ce-Cu-O thin films were epitaxially grown on SrTiO₃(100) by activated reactive evaporation. As grown films showed the metallic temperature dependence of the resistivity and superconducting transition at 12.5 K (R=0). The remarkable parallel shift of the onset temperature of the resistive transition in the magnetic field was observed. Ginzburg-Landau coherence length along the c axis and in the basal plane are 7 Å and 96 Å, respectively.