ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The effect of the lanthanide substitution on the superconductivity in Ba2YCu3O7 and (La,Sr)2CuO4 is investigated. The substitution effect is completely different between the two Cu-oxide systems. In Ba2YCu3O7, the replacement of Y with lanthanides gives negligible change in the transition temperature, whereas a few percent of lanthanide substitution depresses Tc by about 10 K in the (La,Sr)2CuO4 system. The depression of Tc in the latter system depends on the atomic number of lanthanides. From the results of the magnetic susceptibility and the relationship between the lattice parameters and Tc , we conclude that the depression of Tc cannot be ascribed to the magnetic effect nor to the volume effect. Possible mechanisms for the depression of Tc are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.340583
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