Sublattice Asymmetric Reductions of Spin Values on Stacked Triangular Lattice Antiferromagnet CsCoBr$_3$

TL;DR

This paper investigates how spin values are reduced differently on sublattices in a stacked triangular antiferromagnet, using spin-wave theory, revealing asymmetries that align with experimental NMR observations.

Contribution

It introduces a sublattice asymmetric analysis of spin reductions in CsCoBr₃, providing a theoretical explanation for experimental NMR results.

Findings

Spin reductions exhibit sublattice asymmetry.

Molecular field cancellation causes asymmetry.

Results qualitatively match NMR data.

Abstract

We study the reductions of spin values of the ground state on a stacked triangular antiferromagnet using the spin-wave approach. We find that the spin reductions have sublattice asymmetry due to the cancellation of the molecular field. The sublattice asymmetry qualitatively analyzes the NMR results of CsCoBr$_3$.