Electron-Phonon Interaction and Raman Linewidth in Superconducting Fullerides

TL;DR

This paper develops a microscopic theory of electron-phonon interactions in fullerides, analyzing phonon relaxation and frequency shifts, with results aligning well with experimental data.

Contribution

It introduces a detailed microscopic model accounting for disorder effects on phonons in fullerides, estimating electron-phonon coupling constants.

Findings

Finite electronic bandwidth reduces phonon relaxation at q=0

Electron-phonon coupling constants are estimated for fullerides

Results agree with photoemission experiments

Abstract

We propose a microscopic theory of interaction of long wave molecular phonons with electrons in fullerides in the presence of disorder. Phonon relaxation rate and frequency renormalization are discussed. Finite electronic bandwidth reduces phonon relaxation rate at $q=0$. Electron-phonon coupling constants with molecular modes in fullerides are estimated. The results are in good agreement with photoemission experiments.