Direct extraction of the Eliashberg function for electron-phonon coupling: A case study of Be(1010)

TL;DR

This paper introduces a systematic method to directly extract the Eliashberg function from high-resolution photoemission data, demonstrated on Be(1010), offering new insights into surface electron-phonon interactions.

Contribution

A novel, robust procedure for extracting the Eliashberg function directly from experimental data, applicable to various materials and surfaces.

Findings

Successfully applied to Be(1010) surface

Provides detailed insights into electron-phonon coupling

Method is resilient to data imperfections

Abstract

We propose a systematic procedure to directly extract the Eliashberg function for electron-phonon coupling from high-resolution angle-resolved photoemission data. The procedure is successfully applied to the Be(1010) surface, providing new insights to electron-phonon coupling at this surface. The method is shown to be robust against imperfections in experimental data and suitable for wider applications.