  The pressure induced superconducting phase diagram is calculated for an
extension of the periodic Anderson model (PAM) in the $ U = \infty $ limit
taking into account the effect of a nearest neighbor attractive interaction
between f-electrons. We analyze the role of the chemical potential compared to
several plots of the f-band density of states and we also found a
superconductor-insulator transition induced by pressure when the chemical
potential crosses the hybridization gap.
