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From collinear to vortex magnetic structures in Mn corrals on Pt(111)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2011 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 83, no 1, 014406- p.Article in journal (Refereed) Published
Abstract [en]

We study the magnetic properties of small Mn ring-shaped clusters on a Pt(111) surface in the framework of density functional theory. We find that the Mn atoms possess large magnetic moments, of the order of 4 mu(B)/atom, and have dominating antiferromagnetic interatomic exchange interactions. A quantum confinement effect within the ringlike clusters was found, indicating that even very small clusters can be seen as quantum corrals. The antiferromagnetic exchange couplings lead to collinear magnetic arrangements in simple corrals, as well as complex noncollinear ordering, as vortexlike structures, for the case of corrals with particular geometry where antiferromagnetism becomes frustrated.

Place, publisher, year, edition, pages
2011. Vol. 83, no 1, 014406- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-148483DOI: 10.1103/PhysRevB.83.014406ISI: 000286737900009OAI: oai:DiVA.org:uu-148483DiVA: diva2:402255
Available from: 2011-03-07 Created: 2011-03-07 Last updated: 2012-03-26Bibliographically approved

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Nordström, LarsEriksson, Olle

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