Experimental observation of quantum entanglement in low dimensional spin systems

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dc.creatorRappoport, T. G.
dc.creatorGhivelder, L.
dc.creatorFernandes, J. C.
dc.creatorGuimaraes, R. B.
dc.creatorContinentino, M. A.
dc.date2006-08-17
dc.date2006-08-17
dc.date.accessioned2026-07-07T10:03:51Z
dc.date.available2026-07-07T10:03:51Z
dc.descriptionWe report macroscopic magnetic measurements carried out in order to detect and characterize field-induced quantum entanglement in low dimensional spin systems. We analyze the pyroborate MgMnB_2O_5 and the and the warwickite MgTiOBO_3, systems with spin 5/2 and 1/2 respectively. By using the magnetic susceptibility as an entanglement witness we are able to quantify entanglement as a function of temperature and magnetic field. In addition, we experimentally distinguish for the first time a random singlet phase from a Griffiths phase. This analysis opens the possibility of a more detailed characterization of low dimensional materials.
dc.identifierhttps://arxiv.org/abs/cond-mat/0608403
dc.identifierhttp://arxiv.org/abs/cond-mat/0608403
dc.identifierPhys. Rev. B 75, 054422 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.054422
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169446
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.subjectQuantum Physics
dc.titleExperimental observation of quantum entanglement in low dimensional spin systems
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