Dimensionality, nematicity and Superconductivity in Fe-based systems

TL;DR

This paper reviews the role of electronic structure dimensionality, nematicity, and competing instabilities in Fe-based superconductors, highlighting their impact on exotic electronic properties through DFT and ARPES studies.

Contribution

It provides a comprehensive analysis of how dimensionality and nematicity influence electronic properties in Fe-based systems, integrating theoretical and experimental insights.

Findings

Electronic structure dimensionality affects electronic properties.

Nematicity is linked to magnetic long-range order.

Competing structural and magnetic instabilities underlie exotic electronic behavior.

Abstract

Study of Fe based compounds have drawn much attention due to the discovery of superconductivity as well as many other exotic electronic properties. Here, we review some of our works in these materials carried out employing density functional theory and angle resolved photoemission spectroscopy. The results presented here indicate that the dimensionality of the underlying electronic structure plays important role in deriving their interesting electronic properties. The nematicity found in most of these materials appears to be related to the magnetic long range order. We argue that the exoticity in the electronic properties are related to the subtlety in competing structural and magnetic instabilities present in these materials.