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VOLUME 65 | ISSUE 10 | PAGE 782
Stripe motion in CuO2, planes of Y1-xPrxBa2Cu3O7 as seen from the Cu(2) quadrupole resonance
Pulsed NQR at the frequencies of 28-33 hat been used to study copper NQR spectra in ?, ? and Υ0.9ΡΌ.1 ? compounds at temperatures of 4.2-200 K. Quantitative analysis of the spectra has shown that the "plane" Cu(2) spectra shape is well described by using a model of ID correlations of charge and spin distribution in planes (stripe correlations). In the undoped superconductors the charge-spin stripe structure moves fast in the 2 planes, but doping the 2<>7 lattice with praseodymium slows this motion down. PACS: 61.72.Hh, 74.72.Bk, 74.80.-g, 76.60.Gv