The electronic instabilities of the Iron-based superconductors: a variational Monte-Carlo study

TL;DR

This paper presents a variational Monte Carlo study of iron-based superconductors, analyzing their electronic instabilities and ordering phenomena using realistic band structures and insights from previous renormalization group calculations.

Contribution

It is the first VMC study applying realistic band structures to investigate electronic instabilities in iron-based superconductors.

Findings

Identified antiferromagnetism and superconducting pairing tendencies.

Analyzed normal state Fermi surface distortions.

Explored orbital order in the antiferromagnetic state.

Abstract

We report the first variational Monte Carlo (VMC) study of the iron-based superconductors. We use realistic band structures, and the ordering instabilities/variational ansatzs are suggested by previous functional renormalization group calculations. We examine antiferromagnetism, superconducting pairing, normal state fermi surface distortion, and orbital order in the antiferromagnetic state.