Chirality Ordering of Chiral Spin Liquids

TL;DR

This paper investigates how weak interlayer antiferromagnetic coupling influences chiral spin liquids, revealing a ferromagnetic chirality order that breaks parity and time-reversal symmetries in the bulk.

Contribution

It demonstrates that weak antiferromagnetic interplanar coupling favors ferromagnetic chirality ordering, leading to symmetry breaking in chiral spin liquids.

Findings

Ferromagnetic chirality order is energetically favored.

Bulk parity and time-reversal symmetries are violated.

Interplanar coupling influences chiral ordering.

Abstract

We study the effect of introducing a weak antiferromagnetic interplanar exchange coupling in the two dimensional frustrated Heisenberg model. We show that a ferromagnetic(FM) ordering of chirality - {\it i.e.}, same chirality on adjacent planes - is energetically favoured, thus leading to bulk violation of the discrete symmetries parity($P$) and time reversal($T$).