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Thermal entanglement of a geometrically frustrated spin-1 Heisenberg diamond cluster

Published 10 Jan 2023 in cond-mat.stat-mech and quant-ph | (2301.03868v2)

Abstract: Thermal entanglement of a geometrically frustrated spin-1 Heisenberg diamond cluster is examined within the framework of the exact diagonalization method by computing the measure of entanglement negativity. The calculated exact analytical results are applied in order to obtain theoretical prediction of the robustness of bipartite thermal entanglement of the tetranuclear nickel complex Ni4(CO3)2(aetpy)84 (aetpy = 2-aminoethyl-pyridine) against rising temperature and magnetic field.

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