dc.creatorBERGMAN, Anders
dc.creatorNORDSTROEM, Lars
dc.creatorKLAUTAU, Angela Burlamaqui
dc.creatorFROTA-PESSOA, Sonia
dc.creatorERIKSSON, Olle
dc.date.accessioned2012-10-20T04:10:00Z
dc.date.accessioned2018-07-04T15:40:26Z
dc.date.available2012-10-20T04:10:00Z
dc.date.available2018-07-04T15:40:26Z
dc.date.created2012-10-20T04:10:00Z
dc.date.issued2008
dc.identifierJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.320, n.6, p.1173-1179, 2008
dc.identifier0304-8853
dc.identifierhttp://producao.usp.br/handle/BDPI/29326
dc.identifier10.1016/j.jmmm.2007.11.011
dc.identifierhttp://dx.doi.org/10.1016/j.jmmm.2007.11.011
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1625966
dc.description.abstractThe magnetic properties of Co nanostructures and a Co monolayer on W(001) have been studied in the framework of density functional theory. Different geometries such as planar and three-dimensional clusters have been considered, with cluster sizes varying between 2 and 13 atoms. The calculations were performed using the real-space linear muffin-tin orbital method (RS-LMTO-ASA). With respect to the stability of the magnetic state, we predict an antiferromagnetic (AFM) structure for the ground state of the planar Co clusters and a ferromagnetic (FM) state for the three-dimensional clusters. For the three-dimensional clusters, one of the AFM arrangements leads to frustration due to the competing FM and AFM exchange interactions between different atoms in the cluster, and gives rise to a non-collinear state with energy close to that of the FM ground state. The relative role of the Co-Co and Co-W exchange interactions is also investigated. (C) 2007 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherELSEVIER SCIENCE BV
dc.relationJournal of Magnetism and Magnetic Materials
dc.rightsCopyright ELSEVIER SCIENCE BV
dc.rightsrestrictedAccess
dc.subjectdensity functional calculations
dc.subjectnanoclusters
dc.subjectmetal-metal magnetic heterostructures
dc.titleMagnetism of Co overlayers and nanostructures on W(001): A first-principles study
dc.typeArtículos de revistas


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