Impact of Optical Modes on the Pairing Potential in Bilayer Cuprates

I. A. Larionov; M. V. Eremin

paper

Impact of Optical Modes on the Pairing Potential in Bilayer Cuprates

arXiv:cond-mat/0404735

Abstract

Superconducting transition temperature is calculated for differently doped bilayer cuprates. Superexchange is assumed to be the dominating mechanism of high-temperature superconductivity, but the contribution from the phonon potential is not negligible, which qualitatively explains the observed weak isotopic effect. The calculated value 2 $Δ_{ma x} / k_{B} T_{C} ≃ 4.5$ is close to the experiment in the case of optimum doping.

3 pages, 1 figure