Acoustic plasmon exchange in multilayered systems: II. application to high-Tc superconductors

Abstract

For pt.I see ibid., vol.4, p.1799, 1992. A theory for high-Tc superconductivity has been developed using the Eliashberg model on the basis that the attractive interaction is provided by the Plasmon-mediated effective interaction between the charge carriers. Calculation of Tc using these interactions, presented in paper I, shows that Tc should rise, with a saturation effect, with the number of CuO layers per unit cell, which is in agreement with observations in the Tl- and Bi-based compounds. Furthermore, this theory shows that a short coherence length is an essential requirement for superconductivity at high temperature.