dc.creator | BERGMAN, Anders | |
dc.creator | NORDSTROEM, Lars | |
dc.creator | KLAUTAU, Angela Burlamaqui | |
dc.creator | FROTA-PESSOA, Sonia | |
dc.creator | ERIKSSON, Olle | |
dc.date.accessioned | 2012-10-20T04:10:00Z | |
dc.date.accessioned | 2018-07-04T15:40:26Z | |
dc.date.available | 2012-10-20T04:10:00Z | |
dc.date.available | 2018-07-04T15:40:26Z | |
dc.date.created | 2012-10-20T04:10:00Z | |
dc.date.issued | 2008 | |
dc.identifier | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.320, n.6, p.1173-1179, 2008 | |
dc.identifier | 0304-8853 | |
dc.identifier | http://producao.usp.br/handle/BDPI/29326 | |
dc.identifier | 10.1016/j.jmmm.2007.11.011 | |
dc.identifier | http://dx.doi.org/10.1016/j.jmmm.2007.11.011 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1625966 | |
dc.description.abstract | The 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.language | eng | |
dc.publisher | ELSEVIER SCIENCE BV | |
dc.relation | Journal of Magnetism and Magnetic Materials | |
dc.rights | Copyright ELSEVIER SCIENCE BV | |
dc.rights | restrictedAccess | |
dc.subject | density functional calculations | |
dc.subject | nanoclusters | |
dc.subject | metal-metal magnetic heterostructures | |
dc.title | Magnetism of Co overlayers and nanostructures on W(001): A first-principles study | |
dc.type | Artículos de revistas | |