The fundamental role of superconducting quasiparticle coherence in cuprate superconductors

TL;DR

This paper investigates how quasiparticle coherence affects superconductivity in cuprates, revealing that antinodal coherence suppresses s-wave transition temperature but enhances d-wave, highlighting its crucial role.

Contribution

It introduces a kinetic energy driven mechanism to analyze the impact of nodal and antinodal quasiparticle coherences on superconductivity in cuprates, emphasizing the importance of antinodal coherence.

Findings

Antinodal quasiparticle coherence suppresses s-wave transition temperature.

Antinodal quasiparticle coherence enhances d-wave transition temperature.

Antinodal coherence plays a crucial role in cuprate superconductivity.

Abstract

Within the kinetic energy driven superconducting mechanism, we study the interplay between superconductivity and the nodal and antinodal superconducting quasiparticle coherences in cuprate superconductors, and find the s-wave superconducting transition temperature is heavily suppressed by the antinodal superconducting quasiparticle coherence, while the d-wave superconducting transition temperature is enhanced, therefore the antinodal superconducting quasiparticle coherence plays a more crucial role in superconductivity of cuprate superconductors.