Abstract
Making use of the antiparamagnon propagator obtained for a 2D t-J model, we analyzed the nuclear spin lattice relaxation rate T 1 −1 of Cu nuclei in the CuO 2 plane both in the normal and superconducting state. The antiparamagnon describes not only deviation from Korringa's law in the normal state but also anomalous behavior in the superconducting state.
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