Absence of static orbital current magnetism at the apical oxygen site in HgBa${}_2$CuO${}_{4+\delta }$ from NMR

A. M. Mounce, Sangwon Oh, Jeongseop A. Lee +9

The simple structure of HgBa${}_2$CuO${}_{4+\delta }$ (Hg1201) is ideal among cuprates for study of the pseudogap phase as a broken symmetry state. We have performed ${}^{17}$O nuclear magneti…