Stripe motion in CuO{2} planes of Y{1-x}Pr{x}Ba{2}Cu{3}O{7} as seen from the Cu(2) NQR
M. A. Teplov, Yu. A. Sakhratov, A. V. Dooglav, A. V. Egorov, E. V. Krjukov, O. P. Zaitsev
Abstract
Pulsed NQR at the frequencies of 28-33 MHz has been used to study copper NQR spectra in YBa{2}Cu{3}O{7}, TmBa{2}Cu{3}O{7} and Y{0.9}Pr{0.1}Ba{2}Cu{3}O{7} compounds at temperatures of 4.2-200K. Quantitative analysis of the spectra has shown that the "plane" Cu(2) spectra shape is well described by using a model of 1D correlations of charge and spin distribution in CuO{2} planes (stripe correlations). In the undoped superconductors the charge-spin stripe structure moves fast in the CuO{2} planes, but doping the YBa{2}Cu{3}O{7} lattice with praseodymium slows this motion down.