Influence of orbital nematic order on spin responses in Fe-based superconductors

TL;DR

This paper investigates how orbital nematic order influences spin responses in Fe-based superconductors, revealing that it significantly enhances spin nematicity and fluctuations, thus playing a crucial role in the nematic phenomena.

Contribution

It demonstrates that orbital nematic order strongly affects spin correlations, challenging the view that it is a secondary effect in Fe-based superconductors.

Findings

Orbital nematic order drives significant spin nematicity.

It enhances the integrated intensity of spin fluctuations.

Orbital nematic order has a strong effect on spin correlations.

Abstract

Electronic nematicity is ubiquitous in Fe-based superconductors, but what the primary nematic order is and how the various nematic phenomena correlate with each other are still elusive. In this manuscript we study the physical consequence of the orbital nematic order on the spin correlations. We find that the orbital nematic order can drive a significant spin nematicity and can enhance the integrated intensity of the spin fluctuations. Our study shows that the orbital nematic order has strong effect on the spin correlations and it can not be taken as an unimportant secondary effect of the nematic state in Fe-based superconductors.