Entanglement temperature in molecular magnets composed of S-spin dimers
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
20/10/2012
20/10/2012
2009
|
| Resumo |
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: KNaMSi(4)O(10) (M=Mn, Fe or Cu). Copyright (C) EPLA, 2009 CNPq Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CAPES Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Brazilian Millennium Institute for Quantum Information Brazilian Millennium Institute for Quantum Information FAPESP Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) PCI-CBPF program PCI-CBPF program |
| Identificador |
EPL, v.87, n.4, 2009 0295-5075 http://producao.usp.br/handle/BDPI/30184 10.1209/0295-5075/87/40008 |
| Idioma(s) |
eng |
| Publicador |
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY |
| Relação |
Epl |
| Direitos |
closedAccess Copyright EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY |
| Palavras-Chave | #QUANTUM #STATES #DYNAMICS #Physics, Multidisciplinary |
| Tipo |
article original article publishedVersion |
