Thermal entanglement in the mixed-spin Ising-Heisenberg double sawtooth frustrated ladder

Hamid Arian Zad; Nerses Ananikian

doi:10.1016/j.ssc.2018.03.019

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arXiv · 1803.06424

Thermal entanglement in the mixed-spin Ising-Heisenberg double sawtooth frustrated ladder

Hamid Arian Zad·Nerses Ananikian

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Abstract

The entanglement between spin-1/2 interstitial Heisenberg dimers in the mixed spin-(1,1/2) Ising-XXZ double sawtooth ladder is investigated at low temperature. Here, we consider a cyclic four-spin exchange interaction in square plaquette of each block, and investigate the effects of this amazing interaction on the bipartite entanglement between spin-1/2 interstitial dimers. Interestingly, we observe a remarkable difference in concurrence behavior with respect to the cyclic four-spin exchange interaction and magnetic field. Also, the critical points at which the concurrence vanishes are changed versus alteration of the anisotropic parameter of the interstitial Heisenberg dimers.

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Hamid Arian Zad, Nerses Ananikian. 2018-03-16. Thermal entanglement in the mixed-spin Ising-Heisenberg double sawtooth frustrated ladder. https://doi.org/10.1016/j.ssc.2018.03.019

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