Electron-phonon coupling in copper-substituted lead phosphate apatite

TL;DR

This study investigates the electron-phonon coupling in copper-substituted lead phosphate apatite (LK99) to evaluate its potential as a room-temperature superconductor, concluding it is unlikely to be superconducting via this mechanism.

Contribution

The paper provides a comparative analysis of electron-phonon coupling in LK99, offering insights into its superconducting potential based on this interaction.

Findings

Electron-phonon coupling in LK99 is insufficient for room-temperature superconductivity.

Results align with the view that LK99 is unlikely to be a superconductor via electron-phonon interaction.

Study clarifies the role of electron-phonon coupling in the material's properties.

Abstract

Recent reports of room-temperature, ambient pressure superconductivity in copper-substituted lead phosphate apatite, commonly referred to as LK99, have prompted numerous theoretical and experimental studies into its properties. As the electron-phonon interaction is a common mechanism for superconductivity, the electron-phonon coupling strength is an important quantity to compute for LK99. In this work, we compare the electron-phonon coupling strength among the proposed compositions of LK99. The results of our study are in alignment with the conclusion that LK99 is not a likely candidate for room-temperature superconductivity if electron-phonon interaction is to serve as the mechanism.