Theory of Photoemission from the Copper Oxide Material

TL;DR

This paper develops a mean-field theoretical framework for understanding photoemission in copper oxide high-temperature superconductors, focusing on spectral functions, dispersion, and density of states.

Contribution

It introduces a mean-field theory that satisfies local electron constraints, providing qualitative insights consistent with numerical simulations.

Findings

Electron spectral function analyzed

Electron dispersion characterized

Density of states discussed

Abstract

A mean-field theory which satisfying the electron on-site local constraint in the relevant regime of density for the high temperature superconductors is developed. Within this approach, the electron spectral function, the electron dispersion, and the electron density of states of copper oxide materials are discussed, and the results are qualitative consistent with the numerical simulations.