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.

我们研究了具有Dzyaloshinskii-Moriya（DM）相互作用的无限自旋1/2 Ising–Heisenberg自旋链中以测量诱导的非局域性（MIN）为特征的热量子相关性。我们使用传递矩阵方法在热力学极限条件下对MIN进行了分析评估，结果表明MIN及其一阶导数可能会突出量子临界和量子相变（QPT）。我们观察到，DM相互作用降低了各向异性参数在启动QPT中的作用。此外，如果自旋未纠缠，则DM相互作用还引起系统中的非局部性，并且如果自旋相关，则DM相互作用也极大地增强了量子相关性。磁场和温度对量子相关性的影响也在关键时刻显现出来。