Neutron Scattering Study of Elastic Magnetic Signals in Superconducting La1.94Sr0.06Cu4
S. Wakimoto, K. Yamada, S. Ueki, G. Shirane, Y. S. Lee, S. H. Lee, M. A. Kastner, K. Hirota, P. M. Gehring, Y. Endoh, R. J. Birgeneau
Abstract
Recent neutron-scattering experiments on La(2-x)Sr(x)CuO4 single crystals by Wakimoto et al. have revealed that elastic magnetic peaks appear at low temperatures in both insulating (x=0.02-0.05) and superconducting (x=0.06) samples. We have carried out further investigations particularly on the elastic incommensurate peaks for x=0.06, and found that the integrated intensity drastically changes across the low temperature insulator- superconductor boundary; the intensity of x=0.06 is 4 times smaller than that of x=0.05, while the intensity in the insulating region stays constant.
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