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From collinear to vortex magnetic structures in Mn corrals on Pt(111)
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
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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.
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-30989DOI: 10.1103/PhysRevB.83.014406ISI: 000286737900009Scopus ID: 2-s2.0-79551545915OAI: oai:DiVA.org:kth-30989DiVA: diva2:404791
Funder
Swedish Research Council
Note
QC 20110318Available from: 2011-03-18 Created: 2011-03-07 Last updated: 2017-12-11Bibliographically approved

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