EFFECT OF PRESSURE ON T-C AND THE INTRINSIC T-C OF CUPRATES

We propose that the transition temperature in the layered cuprates is affected by a peculiar interplay between doping and pair-breaking scat tering. This scattering can lead to a depression of T-c relative to it s ''intrinsic'' value. Using this picture, one can explain the large v alue of T-c in the three-layered cuprates relative to the two- and one -layer cuprates and also understand the large pressure effects observe d. We predict that one can raise T-c above the usual maximum value by applying pressure on underdoped TI-2201 samples and the maximum value of T-c under pressure is evaluated. The temperature dependence of the pressure coefficient is also discussed.