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dc.creatorJiménez Calzado, Carmenes
dc.creatorMalrieu, J.P.es
dc.date.accessioned2016-10-26T12:40:53Z
dc.date.available2016-10-26T12:40:53Z
dc.date.issued2004
dc.identifier.citationJiménez Calzado, C. y Malrieu, J.P. (2004). Origin and evaluation of the four-spin operators in magnetic lattices. Physical Review B - Condensed Matter and Materials Physics, 69 (9), 944351-9443511.
dc.identifier.issn1098-0121es
dc.identifier.urihttp://hdl.handle.net/11441/48184
dc.description.abstractThe four-spin operators are suspected to have a significant amplitude and an impact on the collective properties in spin ladders and magnetic two-dimensional lattices. They originate from cyclic circulation of electrons ~ring currents!. Starting from a simple Hubbard Hamiltonian one may establish their form from a fourth order expansion of quasidegenerate perturbation theory. This form slightly deviates from the generally assumed biquadratic expression. From a quantitative point of view, their amplitude can be assessed from accurate ab initio explicitly correlated wave functions and energies on embedded clusters. The present work shows that symmetry-broken density functional theory calculations may also provide estimates of the fourbody operator amplitudes, but reliable results require the use of a large Fock component in the exchange functionales
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherAmerican Physical Societyes
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physics, 69 (9), 944351-9443511.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleOrigin and evaluation of the four-spin operators in magnetic latticeses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Química Físicaes
dc.relation.publisherversion10.1103/PhysRevB.69.094435es
dc.identifier.doi10.1103/PhysRevB.69.094435es
idus.format.extent11 p.es
dc.journaltitlePhysical Review B - Condensed Matter and Materials Physicses
dc.publication.volumen69es
dc.publication.issue9es
dc.publication.initialPage944351es
dc.publication.endPage9443511es
dc.identifier.idushttps://idus.us.es/xmlui/handle/11441/48184

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