${}^{139}$La and ${}^{63}$Cu NMR investigation of charge order in La${}_2$CuO${}_{4+y}$ ($T_c=42$K)

T. Imai, Y. S. Lee

We report ${}^{139}$La and ${}^{63}$Cu NMR investigation of the successive charge order, spin order, and superconducting transitions in super-oxygenated La${}_2$CuO${}_{4+y}$ single crysta…