T-c suppression in co-doped striped cuprates - art. no. 177010

We propose a model that explains the reduction of T-c due to the pinning of stripes by planar impurity co-doping in cuprates. A geometrical argument a bout the planar fraction of carriers affected by stripe pinning leads to a linear T-c suppression as a function of impurity concentration z. The criti cal value z, for the vanishing of superconductivity is shown to scale like T-c(2) in the incompressible stripe regime and becomes universal in the com pressible regime. Our theory agrees very well with the experimental data in single- and bilayer cuprates co-doped with Zn, Li, Co, etc.