Entanglement temperature in molecular magnets composed of S-spin dimers

D. O. Soares-Pinto; A. M. Souza; R. S. Sarthour; I. S. Oliveira; M. S. Reis; P. Brandão; J. Rocha; A. M. Dos Santos

doi:10.1209/0295-5075/87/40008

Entanglement temperature in molecular magnets composed of S-spin dimers

D. O. Soares-Pinto, A. M. Souza, R. S. Sarthour, I. S. Oliveira, M. S. Reis, P. Brandão, J. Rocha, A. M. Dos Santos

Materials Engineering

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31 Scopus citations

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, T_e, is then obtained for some values of spin S. From this, it is shown that T_e 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
Article number	40008
Journal	EPL
Volume	87
Issue number	4
DOIs	https://doi.org/10.1209/0295-5075/87/40008
State	Published - Aug 1 2009

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title = "Entanglement temperature in molecular magnets composed of S-spin dimers",

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).",

author = "Soares-Pinto, {D. O.} and Souza, {A. M.} and Sarthour, {R. S.} and Oliveira, {I. S.} and Reis, {M. S.} and P. Brand{\~a}o and J. Rocha and {Dos Santos}, {A. M.}",

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AU - Soares-Pinto, D. O.

AU - Souza, A. M.

AU - Sarthour, R. S.

AU - Oliveira, I. S.

AU - Reis, M. S.

AU - Brandão, P.

AU - Rocha, J.

AU - Dos Santos, A. M.

PY - 2009/8/1

Y1 - 2009/8/1

N2 - 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).

AB - 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).

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SN - 0295-5075

VL - 87

JO - EPL

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ER -

Entanglement temperature in molecular magnets composed of S-spin dimers

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