For many possible electronic applications as well as fundamental studies it is essential to fabricate epitaxial layered structures of insulators, semiconductors or normal metals together with hightemperature superconductors (HTS). However HTS materials have complex lattice structures and this makes it difficult to grow multilayers with sharp interfaces preserving epitaxiallity through the whole...

One of the most exciting cases of superconductivity suppression in high-Tc cuprates is that of RE1−xPrxBa2Cu3O7, where RE stands for a rare earth (see Refs. [1,2] for reviews). Even more exciting are indications that conductivity and superconductivity can be restored in stoichiometric PrBa2Cu3O7 [3,4]. This is such an unexpected result [5] that it is still not generally accepted and further exp...

Interfacial superconductivity has manifested itself in various types of heterostructures: band insulator-band insulator, insulator-Mott and Mott insulator-metal. We report the observation high-temperature (HTS) a complementary long expected type heterostructures, which consists two insulators, La2CuO4 (LCO) PrBa2Cu3O7 (PBCO). By carefully controlling oxidization condition selectively doping CuO...