Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Abstract

We report the pressure effect in Bi2Sr2Ca2Cu3O10+δ (Bi-2223) single crystal with a small amount of intergrowth of Bi2Sr2CaCu2O8+δ (Bi-2212). Their superconducting transition temperatures T cs showed a dome-like shape as a function of pressure, which showed a good agreement with the general relation between the carrier concentration and T c. Our experimental results indicate that high pressure can induce effective carrier doping into the multilayered high-T c cuprate superconductor.