THE ANTIPARAMAGNON IN D-WAVE SUPERCONDUCTOR

Making use of the antiparamagon propagator obtained for 2D t - J model with random phase approximation, we analyse the nuclear spin lattice relaxation of Cu-nuclei on the Cu-O-2 plane in high T-c copper oxides. Within our model a parameter lambda = 1.91T(c)/mu plays a crucial rol e where T-c is the superconducting transition temperature and mu is th e chemical potential. When lambda > 1 the antiparamagnon spectrum has a single peak at the commensurate point (Q) over right arrow = (pi, pi ) while when lambda < 1 the peak splits into four peaks at incommensur ate point (pi + delta(0), pi) etc.