Nonlinear Doping of Cuprate Superconductors -- The case of Bi_2Sr_{2-x}La_xCuO_{6+δ}

Abstract

We analyze the hole doping mechanism in Bi_2Sr_{2-x}La_xCuO_{6+δ} (BSLCO). The singular optimum around x=0.35 is found to be connected with a feedback between the doped CuO_2 layers and its dopant reactant [La^{3+}/Bi^{3+}-O_δ] locking the number of doped holes preferentially on to the universal optimum n_opt=0.16.

Typos corrected

References in corpus (2)

• Evolution of the density of states at EF of Bi2-yPbySr2-xLaxCuO6+d and Bi2Sr2-xLaxCuO6+d cuprates with hole doping
• The bulge in the basal plane area of cuprate superconductors - evidence for 3a singlet hole pairs