Electronic band structure of ferro-pnictide superconductors from ARPES experiment

TL;DR

This paper analyzes ARPES measurements of iron-based superconductors, highlighting subtle differences between experimental and theoretical band structures and their implications for understanding high-temperature superconductivity.

Contribution

It provides a detailed comparison of ARPES data with calculations for 111 and 122 compounds, emphasizing the importance of small band structure differences.

Findings

Differences between measured and calculated bands are minor but significant.

Correlations between band structure features and superconductivity are observed.

Insights into the electronic mechanisms of high-temperature superconductivity are discussed.

Abstract

ARPES experiments on iron based superconductors show that the differences between the measured and calculated electronic band structures look insignificant but can be crucial for understanding of the mechanism of high temperature superconductivity. Here we focus on those differences for 111 and 122 compounds and discuss the observed correlation of the experimental band structure with the superconductivity.