Theory of the copper nuclear spin-lattice relaxation in CuGeO3

Within the framework of the one-dimensional S = 1/2 Heisenberg model with a next-nearest-neghbor antiferromagnetic interaction, a theory of the copper spin-lattice relaxation in the uniform state of the spin-Peierls compound CuGeO3 is presented. The main contribution to the relaxation rate at interm ediate and high temperatures is due to the spin diffusive long-wave process es. A comparison of our results with experimental data shows that the theor y is able to reproduce the main features of the temperature dependence of t he copper relaxation rate.