PREPARATION OF SUPERCONDUCTIVE (BAMO(X))(BACUO2-BEAM EPITAXY(Y)(CACUO2)(N) ARTIFICIAL LATTICES (M=AU, CU, N=2, 4) BY LASER MOLECULAR)

(BaCuO2+y)(2)(CaCuO2)(n) artificial lattices have been grown by an ato mic layer-by-layer deposition technique with laser molecular beam epit axy. The experimental results show that the interface stress and the c harge balance are the controlling factors for the formation of the art ificial lattices. To avoid interface irregularities, growth control by the all atomic layer-by-layer deposition is preferable to the partial atomic layer-by-layer deposition combined with co-deposition. The (Ba 0.7Sr0.3CuO2+y)(2)(Ca0.7Sr0.3CuO2)(4) lattices where Ba and Ca sites a re substituted by an Sr ion to decrease the interface stress have been formed by all atomic layer-by-layer deposition, and (BaAuOx)(BaCuO2+y )(CaCuO2)(2) lattices, where the Cu site between adjacent BaO layers i s replaced by Au, have also been formed by the same method. The (Ba0.7 Sr0.3CuO2+y)(2)(Ca0.7Sr0.3CuO2)(4) lattice shows a resistive anomaly b elow 110 K, where the resistance depends on the magnetic field. The (B aAuOx)(BaCuO2+y)(CaCuO2)(2) lattice shows zero resistance at 20 K with an onset temperature of 60 K.