Disappearance of Superconductivity in the Overdoped Cuprates

Experimental studies of the endpoint of the superconducting dome for (Bi,Pb)2Sr2CuO6+δ (Bi2201) and La2−xSrxCuO4 (LSCO) have raised questions regarding the nature of the cuprate pairing mechanism. Motivated by these experiments, we examine the results of dynamic cluster approximation (DCA) calculations and find that a spin-fluctuation interaction can provide a framework for understanding this end point behavior.