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arXiv · 1911.04754

Pairwise entanglement in double-tetrahedral chain with different Landé g-factors of the Ising and Heisenberg spins

Lucia Galisova
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Abstract

The pairwise entanglement is exactly examined in the spin-1/2 Ising-Heisenberg double-tetrahedral chain with different Landé g-factors of the Ising and Heisenberg spins at zero and finite temperatures. It is shown that the phenomenon present in quantum non-chiral ground states is twice as strong as in quantum chiral ground states and that it gradually diminishes with increasing temperature until it completely vanishes at a certain threshold temperature. It is also demonstrated that the strong magnetic field maintains a weak thermal entanglement quite far from the saturation field, although the ground state is non-entangled.

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Lucia Galisova. 2019-11-12. Pairwise entanglement in double-tetrahedral chain with different Landé g-factors of the Ising and Heisenberg spins. https://doi.org/10.12693/aphyspola.137.604

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