  We investigated the characteristics of the spin fluctuations mediated
superconductivity employing the Eliashberg formalism. The effective interaction
between electrons was modeled in terms of the spin susceptibility measured by
the inelastic neutron scattering experiments on single crystal La2-xSrxCuO4
superconductors. The diagonal self-energy and off-diagonal self-energy were
calculated by solving the coupled Eliashberg equation self-consistently for
chosen spin susceptibility and tight-binding dispersion of electrons. The full
momentum and frequency dependence of the self-energy is presented for the
optimal, overdoped, and underdoped LSCO cuprates in superconductive state.
These results may be compared with the experimentally deduced self-energy from
ARPES experiments.
