Staging superstructures in high-$T_c$ Sr/O co-doped La${}_{2-x}$Sr${}_x$CuO${}_{4+y}$

P. J. Ray, N. H. Andersen, T. B. S. Jensen +6

We present high energy X-ray diffraction studies on the structural phases of an optimal high-$T_c$ superconductor La${}_{2-x}$Sr${}_x$CuO${}_{4+y}$ tailored by co-hole-doping. This is sp…