Evolution of a Metal to Insulator Transition in Ca${}_{2-x}$Na${}_x$CuO${}_2$Cl${}_2$, as seen by ARPES

F. Ronning, T. Sasagawa, Y. Kohsaka +10

We present angle resolved photoemission (ARPES) data on Na-doped Ca${}_2$CuO${}_2$Cl${}_2$. We demonstrate that the chemical potential shifts upon doping the system across the insulator…