(100) it consists of with the orientation La 2-x Sr x CuO 4

摘要

PROBLEM TO BE SOLVED: To provide a (100)-oriented copper oxide superconductor thin film having superior superconductivity in a direction perpendicular to a substrate surface, and also to provide a method of manufacturing the same.;SOLUTION: The (100)-oriented copper oxide superconductor thin film comprises a (100)-oriented LaSrAlO₄ monocrystalline substrate 3 and a (100)-oriented La_2-xSr_xCuO₄ superconducting thin film 4 epitaxially grown on the monocrystalline substrate 3, and has a flat surface. The (100)-oriented copper oxide superconductor thin film is formed by a laser ablation method. CuO₂ faces of the (100)-oriented La_2-xSr_xCuO₄ superconducting thin film 4 are arranged in parallel to each other in a direction perpendicular to the substrate surface, thereby increasing a superconducting coherence length in a direction perpendicular to the substrate surface, which enables the (100)-oriented copper oxide superconductor thin film to be used in a superconducting device which uses superconductivity in a direction perpendicular to the substrate surface.;COPYRIGHT: (C)2003,JPO