A proposal to determine the spectrum of pairing-glue in high-temperature superconductors

TL;DR

This paper introduces a method to analyze angle-resolved photoemission data in anisotropic high-temperature superconductors, enabling direct extraction of the bosonic spectral function responsible for Cooper pairing, with built-in validation checks.

Contribution

It presents a novel analysis technique for photoemission data that directly determines the pairing-glue spectral function in high-temperature superconductors.

Findings

Method successfully extracts bosonic spectral functions

Includes a self-consistency validation step

Applicable to two-dimensional anisotropic superconductors

Abstract

We propose a method for an analysis of the angle-resolved photoemission data in two-dimensional anisotropic superconductors which directly yields the spectral function of the bosons mediating Cooper pairing. The method includes a self-consistency check for the validity of the approximations made in the analysis. We explicitly describe the experimental data needed for implementing the proposed procedure.