Structure factor of low-energy spin excitations in a S=1/2 kagome antiferromagnet

TL;DR

This paper calculates the structure factor for low-energy spin excitations in a kagome antiferromagnet, revealing insights into the fermionic spinon pairs and their breaking into individual spinons.

Contribution

It provides a theoretical calculation of the inelastic neutron scattering structure factor for spinon pairs in a S=1/2 kagome antiferromagnet, a novel approach for understanding its magnetic excitations.

Findings

Structure factor for spinon pairs calculated

Insights into spinon breaking into individual excitations

Supports fermionic spinon model in kagome antiferromagnet

Abstract

The ground state of the S=1/2 Heisenberg antiferomagnet on kagome can be viewed as a collection of fermionic spinons bound into small, heavy singlet pairs. Low-energy magnetic excitations in this system correspond to breaking the pairs into individual spinons. We calculate the structure factor for inelastic neutron scattering from independent spinon pairs.