Inhomogeneous slowing down of spin fluctuations induced by charge stripe order in 1/8-doped lanthanum cuprates

Abstract

We report ${}^{139}$La nuclear magnetic resonance (NMR) measurements on La${}_{2-x}$Sr${}_x$CuO${}_4$ ($0.07\le x\le 0.15$) and La${}_{2-x}$Ba${}_x$CuO${}_4$ ($x=1/8$) single crystals, focusing on the spin freezing observed in 1/8-doped lanthanum cuprates. Charge stripe order seems to induce the inhomogeneous slowing down of spin fluctuations toward spin order and compete with superconductivity.

5 pages, 2 figures. The manuscript has been revised significantly