Missing Quasiparticles and the Chemical Potential Puzzle in the Doping Evolution of the Cuprate Superconductors

K. M. Shen, F. Ronning, D. H. Lu +12

The evolution of Ca${}_{2-x}$Na${}_x$CuO${}_2$Cl${}_2$ from Mott insulator to superconductor was studied using angle-resolved photoemission spectroscopy. By measuring both the excita…