Critical temperatures in cuprate superconductors

TL;DR

This paper investigates the superconducting order parameter in cuprates using Bogoliubov theory, predicting an effective critical temperature linked to the pseudogap, offering insights into experimental features.

Contribution

It introduces a simplified model connecting the coherent gap to the pseudogap, providing a new perspective on the critical temperatures in cuprate superconductors.

Findings

Prediction of an effective critical temperature Tc* greater than Tc

Proposed link between the coherent gap D0 and the pseudogap DPG

Enhanced understanding of experimental features in cuprates

Abstract

The order parameter in superconductivity of cuprates is investigated in the framework of the Bogoliubov theory. By using a simplifying assumption about the electronic states, it is predicted an effective critical temperature Tc* > Tc associated to the coherent gap D0. A connection between D0 and the antinodal pseudogap DPG is proposed allowing for a comprehensive picture of the main experimental features of cuprate superconductors.