Spin-lattice relaxation of 63Cu in YBa2Cu3O7-y
Verkhovskii S. V. , Zhdanov Yu. I., Aleksashin B. A., Mikhalev K. N., Serikov V. V. , Bogdanovich A. M., Kozhevnikov V. L. , Cheshnitskii S. M.
The temperature dependence of the spin-lattice relaxation time of Cu nuclei at the frequencies of the nuclear quadrupole resonance of the crystallographically nonequi valen t positions of the copper atoms, Cu 1 (22 MHz) and Cu2 (31.5 MHz), in the normal state and superconducting state of the compound YBa2Cu307_>; = 0.05 and 0.24, Tc = 93 К and 56 K) is presented.