Abstract

This work considers the spin-1/2 Heisenberg dimer, the mixed spin-(1/2,1) Heisenberg dimer and their quantum entanglement, particularly, the dependence of the entanglement on the system characteristics and the external magnetic field. The quantum entanglement in this work is determined using two different methods, namely ‘Negativity’ and ‘Concurrence’. The dependence of the corresponding quantities on spins Landé g-factors, system anisotropy constants and exchange constant is discussed.

中文翻译：

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自旋二聚体中的量子纠缠：磁场和异质g因子的影响

摘要

本文研究了自旋1/2海森堡二聚体，自旋（1 / 2,1）海森堡二聚体及其量子纠缠，特别是纠缠对系统特性和外部磁场的依赖性。这项工作中的量子纠缠是使用两种不同的方法确定的，即“负性”和“并发性”。讨论了相应量对自旋Landég因子，系统各向异性常数和交换常数的依赖性。