Standard behaviour of Bi2Sr2CaCu2O8+d overdoped

TL;DR

This paper demonstrates that the overdoped Bi2Sr2CaCu2O8+d superconductor's critical temperature and gap can be accurately modeled using standard d-wave Eliashberg theory with antiferromagnetic spin fluctuations, aligning well with experimental data.

Contribution

It shows that the overdoped cuprates are effectively described by conventional Eliashberg theory with minimal free parameters.

Findings

Theoretical calculations match experimental critical temperature and gap.

Standard d-wave Eliashberg theory explains overdoped cuprates.

Antiferromagnetic spin fluctuations are key to superconductivity in this regime.

Abstract

I calculated the critical temperature and superconducting gap in the framework of one band d wave Eliashberg's theory with only one free parameter in order to reproduce the experimental data relative to Bi2Sr2CaCu2O8+d (BSCCO) in the overdoped regime. The theoretical calculations are in excellent agreement with the experimental data and indicate that the cuprates in the overdoped regime are well described by standard d-wave Eliashberg theory with antiferromagnetic spin fluctuations.