Temperature dependence of the angle resolved photoemission spectra in the undoped cuprates: self-consistent approach to the t-J-Holstein model

TL;DR

This paper introduces a self-consistent method for analyzing ARPES in the t-J-Holstein model, accurately matching Monte Carlo data and explaining temperature effects in undoped cuprates through magnetic and electron-phonon interactions.

Contribution

A new self-consistent approach for ARPES spectra in the t-J-Holstein model that aligns with exact data and elucidates temperature dependence in cuprates.

Findings

Accurate ARPES spectra matching Monte Carlo results at zero temperature.

Explanation of anomalous temperature dependence in undoped cuprates.

Identification of cooperative effects of magnetic fluctuations and electron-phonon coupling.

Abstract

We develop a novel self-consistent approach for studying the angle resolved photoemission spectra (ARPES) of a hole in the t-J-Holstein model giving perfect agreement with numerically exact Diagrammatic Monte Carlo data at zero temperature for all regimes of electron-phonon coupling. Generalizing the approach to finite temperatures we find that the anomalous temperature dependence of the ARPES in undoped cuprates is explained by cooperative interplay of coupling of the hole to magnetic fluctuations and strong electron-phonon interaction.