Entanglement, magnetic and quadrupole moments properties of the mixed spin Ising-Heisenberg diamond chain

TL;DR

This paper investigates the thermal entanglement, magnetic, and quadrupole properties of a mixed spin-1/2 and spin-1 Ising-Heisenberg diamond chain, revealing plateau behaviors and the effects of various couplings.

Contribution

It provides a detailed analysis of entanglement and magnetic properties in a mixed spin diamond chain, highlighting the influence of dipolar and quadrupole interactions.

Findings

Magnetization and quadrupole moment plateaus observed for antiferromagnetic couplings.

Thermal negativity varies with Heisenberg couplings, showing an intermediate plateau.

Negativity and quadrupole moment exhibit similar behavior when dipolar and quadrupole couplings are equal.

Abstract

Thermal entanglement, magnetic and quadrupole moments properties of the mixed spin-1/2 and spin-1 Ising-Heisenberg model on a diamond chain are considered. Magnetization and quadrupole moment plateaus are observed for the antiferromagnetic couplings. Thermal negativity as a measure of quantum entanglement of the mixed spin system is calculated. Different behavior for the negativity is obtained for the various values of Heisenberg dipolar and quadrupole couplings. The intermediate plateau of the negativity has been observed at absence of the single-ion anisotropy and quadrupole interaction term. When dipolar and quadrupole couplings are equal there is a similar behavior of negativity and quadrupole moment.