Pressure Effect on the Superconducting Transition Temperature of La–Sr–Cu–O System

Effect of pressure on the superconducting transition temperature of La–Sr–Cu–O system has been studied up to 5.9 kbar with the use of a conventional clamp cell method. The transition temperature TC where the resistivity vanishes increases linearly in response to the applied pressure p within the observed range, namely dTC/dp=0.2 K/kbar, and the onset temperature of the superconductivity seems to increase more sensitively with the pressure.