Impact of Optical Modes on the Pairing Potential in Bilayer Cuprates

2004/04/30 by I. A. Larionov, M. V. Eremin
Physics and Astronomy · #cond-mat.supr-con #cond-mat.str-el

paper · pdf

published as Bulletin of the Russian Academy of Sciences: Physics, Vol. 62, No. 8, pp. 1228-1230 (1998) · 3 pages, 1 figure

arxiv created 2004/04/30 · arxiv updated 2009/12/01

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 2Δ_max/k_B T_C ≃ 4.5 is close to the experiment in the case of optimum doping.

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