Coexistence of Superconductivity and Ferromagnetism in Dilute Co-doped $La_{1.89} Ce_{0.11} Cu O_{4\pm\d}$ System

K. Jin, J. Yuan, L. Zhao +8

Thin films of the optimally electron-doped $T^{\prime }$-phase superconductor La${}_{1.89}$Ce${}_{0.11}$CuO$_{4\pm \d}$ are investigated by dilute Co doping, formed as La${}_{1.89}$Ce${}_{0.11}$(Cu…