Tc oscillations in multilayered cuprates superconductors

TL;DR

This paper models the critical temperature (Tc) oscillations in multilayered cuprate superconductors, showing that Tc peaks at three planes, aligning with experimental data, and emphasizing the role of electron-phonon coupling.

Contribution

It introduces a combined BCS and shear modulus model to explain Tc oscillations based on the number of cuprate planes, highlighting the importance of electron-phonon interactions.

Findings

Tc oscillates with the number of cuprate planes.

Maximum Tc occurs at three planes.

Electron-phonon coupling is crucial for superconductivity.

Abstract

When combining the BCS expression of Tc with a shear modulus constant model, we can demonstrate that Tc oscillates depending on the number of the cuprate planes and that it reaches its first maximum for three planes. This is in good agreement with experimental data and suggests that the electron- phonon coupling is essential to the superconductivity of the cuprates.