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Magnetism and morphology of Co nanocluster superlattices on GdAu2 /Au(111)- (13×13)

AuthorsCavallin, A.; Fernández, Laura; Ilyn, Max; Magaña, Ana; Ormaza, Maider; Matena, Manfred; Vitali, Lucia ; Ortega, J. Enrique ; Ohresser, Philippe; Schiller, Frederik
Issue Date2014
PublisherAmerican Physical Society
CitationPhysical Review B 90(23): 235419 (2014)
AbstractWe present a comprehensive study of the magnetism and morphology of an ultrahigh density array of Co nanoclusters self-assembled on the single atomic layer GdAu2 on Au(111) template surface. Combining scanning tunneling microscopy, x-ray magnetic circular dichroism, and magneto-optical Kerr effect measurements, we reveal a significant enhancement of the perpendicular magnetic anisotropy energy for noncoalesced single atomic layer nanoclusters compared to Co/Au(111). For coverages well beyond the onset of coalescence, we observe room-temperature in-plane magnetic remanence.
DescriptionUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.90.235419
Identifiersdoi: 10.1103/PhysRevB.90.235419
issn: 2469-9950
e-issn: 2469-9969
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