“…[10], the oscillations of the critical temperature as a function of the number of atomic monolayers have been found for ultra-thin Pb films grown on Si(111) substrate. This experiment reopens an extensive research concerning the interplay of the superconductivity and the quantum confinement in nanoscale systems [1,3,11,14,18,19,22]. The study of the superconductivity in Pb nanofilms has been extended by Eom et al [8].…”