Shape of the Cu(2) NQR spectra in YBa2Cu3O7, TmBa2Cu3O7 and TmBa2Cu4O8
Dooglav A.V., Egorov A.V., Krjukov E.V., Sakhratov Ya.A., Teplov M.A., Xu Yu.
We present a study of shape of the Cu(2) NQR spectra in õ÷ÁÇóÉÚïÕ, ôÔ÷ÁÇóÉÚó^ and ôÔ÷ÁÇóÝï× compounds at temperatures of 4.2-300 K. The results of the quantitative analysis lead us to conclude that the shape of the Cu(2) NQR spectra in all the samples studied can be described in the frame of the "motional narrowing" model implying the Cu(2) nucleus to possess two different NQR frequencies between which it can rapidly jump. The difference in frequencies seems to be related to the charge-stripe-correlations in óÉïÇ planes resulting in a dynamical modulation of the electric field gradients at the Cu(2) nuclei. PACS: 61.72.Hh, 74.72.Bk, 74.80.-g, 76.60.Gv
Home
![](/ps/1022/article_15520_800_head.png "<b>We present a study of shape of the Cu(2) NQR spectra in õ÷ÁÇóÉÚïÕ, ôÔ÷ÁÇóÉÚó^ and ôÔ÷ÁÇóÝï× compounds at temperatures of 4.2-300 K. The results of the quantitative analysis lead us to conclude that the shape of the Cu(2) NQR spectra in all the samples studied can be described in the frame of the "motional narrowing" model implying the Cu(2) nucleus to possess two different NQR frequencies between which it can rapidly jump. The difference in frequencies seems to be related to the charge-stripe-correlations in óÉïÇ planes resulting in a dynamical modulation of the electric field gradients at the Cu(2) nuclei.</b> PACS: 61.72.Hh, 74.72.Bk, 74.80.-g, 76.60.Gv")