Stripe motion in CuO[sub 2] planes of Y[sub 1-x]Pr[sub x]Ba[sub 2]Cu[sub 3]O[sub 7] as observed from the Cu(2) quadrupole resonance

Teplov, M. A.; Sakhratov, Yu. A.; Dooglav, A. V.; Egorov, A. V.; Krjukov, E. V.; Zaitsev, O. P.
May 1997
JETP Letters;5/25/97, Vol. 65 Issue 10, p821
Academic Journal
The NQR spectra of copper in the compounds YBa[sub 2]Cu[sub 3]O[sub 7], TmBa[sub 2]Cu[sub 3]O[sub 7], and Y[sub 0.9]Pr[sub 0.1]Ba[sub 2]Cu[sub 3]O[sub 7] at temperatures of 4.2–200 K are investigated by a pulsed NQR technique at frequencies of 28–33 MHz. Quantitative analysis of the spectra shows that the shape of the “plane” Cu(2) spectra is well described by using a model of 1D correlations of the charge and spin distribution in the CuO[sub 2] planes (stripe correlations). In the undoped superconductors the charge–spin stripe structure moves fast in the CuO[sub 2] planes, but doping the YBa[sub 2]Cu[sub 3]O[sub 7] lattice with praseodymium slows this motion down. © 1997 American Institute of Physics.


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