Spotlighting quantum phase transition in spin-1/2 Ising-Heisenberg diamond chain employing Measurement-Induced Nonlocality

TL;DR

This paper investigates how Measurement-Induced Nonlocality (MIN) reveals quantum phase transitions in an infinite spin-1/2 Ising-Heisenberg chain with Dzyaloshinskii-Moriya interaction, highlighting the effects of DM interaction, magnetic field, and temperature.

Contribution

It analytically evaluates MIN in the thermodynamic limit and demonstrates its effectiveness in detecting quantum criticality and phase transitions in the model.

Findings

MIN and its derivative signal quantum criticality.

DM interaction influences the role of anisotropy in QPT.

DM interaction induces nonlocality and enhances quantum correlations.

Abstract

We examine thermal quantum correlations characterized by Measurement-Induced Nonlocality (MIN) in an infinite spin-1/2 Ising-Heisenberg spin chain with Dzyaloshinskii-Moriya (DM) interaction. We evaluate MIN analytically in the thermodynamic limit using the transfer matrix approach and show that the MIN and its first-order derivative may spotlight the quantum criticality and quantum phase transition (QPT). We observe that the DM interaction reduces the role of anisotropy parameter in initiating QPT. Further, the DM interaction also induces the nonlocality in the system if the spins are unentangled and greatly enhances the quantum correlations if the spins are correlated. The impact of the magnetic field and temperature on quantum correlations is also brought out at a critical point.