Spin waves and phase diagram of one-dimensional, dipolar antiferromagnets

TL;DR

This paper investigates the spin-wave properties and phase diagram of a one-dimensional dipolar antiferromagnetic chain using linear spin-wave theory, comparing theoretical results with experimental data for RbMnBr3.

Contribution

It provides a comprehensive phase diagram for dipolar antiferromagnetic chains considering arbitrary interaction ratios and field orientations, integrating theoretical calculations with experimental validation.

Findings

Phase diagram mapped for various dipolar to exchange interaction ratios.

Magnetization results align with experimental data for RbMnBr3.

Analysis includes effects of magnetic field orientation on the chain.

Abstract

We report on the properties of a dipolar, antiferromagnetic chain in the framework of linear spin-wave theory. The phase diagram is calculated for an arbitrary ratio of dipolar interaction to exchange interaction and for fields both parallel and perpendicular to the chain direction. The calculated magnetization is compared with experimental measurements for RbMnBr_3, a quasi one-dimensional antiferromagnet.