Quasi-one-dimensional anisotropic Heisenberg model in a transverse magnetic field

TL;DR

This paper investigates the phase diagram of weakly coupled XXZ chains in a transverse magnetic field using mean-field approximation and exact results, applying findings to the compound Cs2CoCl4 to estimate interchain interactions.

Contribution

It introduces a combined approach of mean-field and exact methods to analyze the phase diagram of quasi-one-dimensional anisotropic Heisenberg models in a transverse field.

Findings

Phase diagram characterized for weakly coupled XXZ chains.

Estimated interchain interaction in Cs2CoCl4.

Validates the effective one-dimensional model approach.

Abstract

The phase diagram of weakly coupled $XXZ$ chains in a transverse magnetic field is studied using the mean-field approximation for the interchain coupling and known exact results for an effective one-dimensional model. Results are applied to the quasi-one-dimensional antiferromagnet $Cs_{2}CoCl_{4}$ and the value of interchain interaction in this compound is estimated.