$^{17}$O NMR study of charge ordered La$_{1.885}$Sr$_{0.115}$CuO$_4$

Abstract

We successfully isolated the $^{17}$O NMR signals at the planar sites in La$_{1.885}$Sr$_{0.115}$CuO$_4$ ($T_{c}=30$ K) by applying an external magnetic field along the Cu-O-Cu bond direction of a single crystal. We demonstrate that charge order enhances incommensurate Cu spin fluctuations below $T_{charge} \simeq 80$ K.