The direct Cu NQR Study of the Stripe Phase in the Lanthanum Cuprates
arXiv:cond-mat/0005090 · doi:10.1016/S0921-4534(00)00994-1
Abstract
Using Cu NQR in Eu-doped La_(2-x)Sr_xCuO_4 we find the evidence of the pinned stripe phase at 1.3K for 0.08<x<0.18. The pinned fraction increases by one order of magnitude near hole doping x=1/8. The NQR lineshape reveals three inequivalent Cu positions. A dramatic change of the NQR signal for x > 0.18 correlating with the onset of bulk superconductivity corresponds to the depinning of the stripe phase.
4 pages, 3 figures, to appear in Physica C, Proceedings of the 6th International Conference on Materials and Mechanisms of Superconductivity, Houston, February 2000