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Robust Magnetic Moments on Impurities in Metallic Clusters: Localized Magnetic States in Superatoms
Virginia Commonwealth University, USA.
Virginia Commonwealth University, USA.
Virginia Commonwealth University, USA.
Virginia Commonwealth University, USA.
2013 (English)In: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 117, no 20, 4297-4303 p.Article in journal (Refereed) Published
Abstract [en]

Introducing magnetic impurities into clusters of simplemetals can create localized states for higher angular momentum quantumnumbers (l = 2 or 3) that can breed magnetism analogous to that invirtual bound states in metallic hosts, offering a new recipe for magneticsuperatoms. In this work, we demonstrate that MnCan clusterscontaining 6−15 Ca atoms show a spin magnetic moment of 5.0 μBirrespective of the cluster size. Theoretical analysis reveals that the Mn dstates hybridize only partially with superatomic states and introduce extramajority and minority d states, largely localized at the Mn site, with alarge gap. Successive addition of Ca atoms introduces superatomic statesof varying angular momentum that are embedded in this gap, allowingcontrol over the stability of the motifs without altering the moment. Assemblies of such clusters can offer novel electronic features due to theformation of localized magnetic “quasibound states” in a confined nearlyfree electron gas.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2013. Vol. 117, no 20, 4297-4303 p.
National Category
Condensed Matter Physics
Research subject
Physics, Condensed Matter Physics
Identifiers
URN: urn:nbn:se:lnu:diva-44619DOI: 10.1021/jp4012735OAI: oai:DiVA.org:lnu-44619DiVA: diva2:822433
Available from: 2015-06-16 Created: 2015-06-16 Last updated: 2016-05-03Bibliographically approved

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Islam, Fhokrul
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