Abstract
In the present work, we investigate the quantum thermal entanglement in molecular magnets composed of dimers of spin S, using an Entanglement Witness built from measurements of magnetic susceptibility. An entanglement temperature, Te, is then obtained for some values of spin S. From this, it is shown that Te is proportional to the intradimer exchange interaction J and that entanglement appears only for antiferromagnetic coupling. The results are compared to experiments carried on three isostructural materials: KNaMSi4O10 (M=Mn, Fe or Cu).
Original language | English |
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Article number | 40008 |
Journal | EPL |
Volume | 87 |
Issue number | 4 |
DOIs | |
State | Published - Aug 1 2009 |