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- Title
Entanglement Negativity and Concurrence in Some Low-Dimensional Spin Systems.
- Authors
Lima, Leonardo S.
- Abstract
The influence of magnon bands on entanglement in the antiferromagnetic XXZ model on a triangular lattice, which models the bilayer structure consisting of an antiferromagnetic insulator and normal metal, is investigated. This effect was studied in ferromagnetic as well as antiferromagnetic triangular lattices. Quantum entanglement measures given by the entanglement negativity have been studied, where a magnon current is induced in the antiferromagnet due to interfacial exchange coupling between localized spins in the antiferromagnet and itinerant electrons in a normal metal. Moreover, quantum correlations in other frustrated models, namely the metal-insulation antiferromagnetic bilayer model and the Heisenberg model with biquadratic and bicubic interactions, are analyzed.
- Subjects
QUANTUM correlations; QUANTUM entanglement; HEISENBERG model
- Publication
Entropy, 2022, Vol 24, Issue 11, p1629
- ISSN
1099-4300
- Publication type
Article
- DOI
10.3390/e24111629