Magnetic and quantum entanglement properties of the distorted diamond chain model for azurite

TL;DR

This paper investigates the magnetic and quantum entanglement properties of a distorted diamond chain model for azurite, using quantum exchange interactions and mean-field methods to analyze thermodynamic and entanglement behaviors.

Contribution

It introduces a variational mean-field approach to study magnetic and entanglement properties of azurite's model, incorporating experimental exchange parameters.

Findings

Thermodynamic properties match experimental data

Thermal entanglement varies with temperature

Magnetization plateau observed in the model

Abstract

We present the results of magnetic properties and entanglement of the distorted diamond chain model for azurite using pure quantum exchange interactions. The magnetic properties and concurrence as a measure of pairwise thermal entanglement have been studied by means of variational mean-field like treatment based on Gibbs-Bogoliubov inequality. Such a system can be considered as an approximation of the natural material azurite, Cu3(CO3)2(OH)2. For values of exchange parameters, which are taken from experimental results, we study the thermodynamic properties, such as azurite specific heat and magnetic susceptibility. We also have studied the thermal entanglement properties and magnetization plateau of the distorted diamond chain model for azurite.