Copper-based high-temperature superconducting material

摘要

A copper-based high-temperature superconducting material includes a carrier supply layer (1) overdoped with carriers and a superconducting layer (2) comprised of at least three CuO2 layers (3) that are selectively doped with the carriers, whereby a high superconducting transition temperature (Tc) is maintained to be not less than 116 K, critical current density (Jc) is improved to be 5 x 10<6> A/cm<2> (77 K, 0 T), and irreversible field (Hirr) is improved to be not less than 7 T.