TRANSPORT PROPERTIES OF CuO IN YBCO/CuO/YBCO JUNCTION

The zero resistance behavior of a CuO film sandwiched with YBa2Cu3O7-delta films has been examined. The CuO is of tenorite C2/c structure which is a deformed NaCl-type lattice structure without being separated by an alkaline earth, and it forms a bulk in which copper is surrounded by nearly a square of Oxygen. The transition temperature T-ce (R = 0) in the fabricated sandwiched-type-CuO optimally increases over that of YBa2Cu3O-(7-delta) film-electrodes.