Thin high resistance films of superconductors have a reduced Tc. This reduction has been recently explained with the enhanced Coulomb interaction in disordered two dimensional metals. We investigate the superconductivity in a sandwich of two thin superconducting Bi films separated by an insulating Sb layer. The results do not confirm the "Coulomb interpretation". © 1991.
Yap, E., & Bergmann, G. (1991). Transition temperature of coupled thin superconducting films. Solid State Communications, 78(3), 245–248. https://doi.org/10.1016/0038-1098(91)90292-4