High-Tc Superconductivity of La-Ba-Cu Oxides. III –Electrical Resistivity Measurement

Electrical resistivity of the high-T c superconductor (La 1- x Ba x ) 2 CuO 4 is measured as a function of temperature. The resistivity becomes substantially zero below 25 K and the onset of the superconducting transition is observed at 35 K for one of the samples. In the higher temperature region a T -linear term dominates in the normal-state resistivity.