Thermal entanglement in the anisotropic Heisenberg XXZ model with the Dzyaloshinskii-Moriya interaction

TL;DR

This paper studies how Dzyaloshinskii-Moriya interaction influences thermal entanglement in a two-qubit Heisenberg XXZ model, revealing that the interaction direction and parameters can effectively control entanglement and critical temperature.

Contribution

It demonstrates that the Dzyaloshinskii-Moriya interaction parameters, especially the x-component, can be used to efficiently control thermal entanglement in the XXZ model.

Findings

Dzyaloshinskii-Moriya interaction significantly affects entanglement.

The x-component of DM interaction has a greater impact than the z-component.

Adjusting DM interaction direction enhances entanglement and critical temperature.

Abstract

The thermal entanglement is investigated in a two-qubit Heisenberg XXZ system with Dzyaloshinskii-Moriya (DM) interaction. It is shown that the entanglement can be efficiently controlled by the DM interaction parameter and coupling coefficient $J_{z}$. $D_{x}$(the x-component parameter of the DM interaction) has a more remarkable influence on the entanglement and the critical temperature than $D_{z}$(the z-component parameter of the DM interaction). Thus, by the change of DM interaction direction, we can get a more efficient control parameter to increase the entanglement and the critical temperature.