Impact of Optical Modes on the Pairing Potential in Bilayer Cuprates
I. A. Larionov, M. V. Eremin
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 2Δmax/kB TC 4.5 is close to the experiment in the case of optimum doping.
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