Journal
EUROPEAN PHYSICAL JOURNAL PLUS
Volume 136, Issue 3, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1140/epjp/s13360-021-01254-w
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The quantum correlations between two neighbouring anisotropic XYZ Heisenberg spins under the effect of Dzyaloshinskii-Moriya interaction at thermal equilibrium were studied in this research, revealing that uncertainty-induced quantum nonlocality can go beyond negativity and local quantum uncertainty. Additionally, the presence of Dzyaloshinskii-Moriya interaction along the z-axis was found to reduce the destructive effects of thermal fluctuations and enhance quantum correlations in the two-spin system. Furthermore, an entangled-unentangled phase transition can be detected from the behavior of negativity.
The quantum correlations between two neighbouring anisotropic XYZ Heisenberg spins under the effect of Dzyaloshinskii-Moriya interaction at thermal equilibrium is considered. We evaluate and compare the negativity, uncertainty-induced quantum nonlocality and local quantum uncertainty corresponding to involved system. By exploiting the behaviour of each quantifier, in terms of the system parameters, we have shown that the uncertainty-induced quantum nonlocality can reveal certain non-classicality that goes beyond negativity and local quantum uncertainty. Further, we show that the presence of Dzyaloshinskii-Moriya interaction along the z-axis can reduce the undesirable destructive effects of thermal fluctuations, and therefore enhances quantum correlations in the two-spin system. In addition, an entangled-unentangled phase transition can be detected from the behaviour of negativity.
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