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Magnetic anisotropy of graphene quantum dots decorated with a ruthenium adatom

Beljakov, I.; Meded, V.; Symalla, F.; Fink, K.; Shallcross, S.; Wenzel, W.

Abstract:
The creation of magnetic storage devices by decoration of a graphene sheet by magnetic transition-metal adatoms, utilizing the high in-plane versus out-of-plane magnetic anisotropy energy (MAE), has recently been proposed. This concept is extended in our density-functional-based modeling study by incorporating the influence of the graphene edge on the MAE. We consider triangular graphene flakes with both armchair and zigzag edges in which a single ruthenium adatom is placed at symmetrically inequivalent positions. Depending on the edge-type, the graphene edge was found to influence the MAE in opposite ways: for the armchair flake the MAE increases close to the edge, while the opposite is true for the zigzag edge. Additionally, in-plane pinning of the magnetization direction perpendicular to the edge itself is observed for the first time.

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Verlagsausgabe §
DOI: 10.5445/IR/1000048073
Veröffentlicht am 06.04.2018
Originalveröffentlichung
DOI: 10.3762/bjnano.4.51
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Coverbild
Zugehörige Institution(en) am KIT Institut für Physikalische Chemie (IPC)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2013
Sprache Englisch
Identifikator ISSN: 2190-4286
urn:nbn:de:swb:90-480732
KITopen-ID: 1000048073
HGF-Programm 43.11.03 (POF II, LK 01)
Erschienen in Beilstein journal of nanotechnology
Band 4
Heft 1
Seiten 441-445
Schlagworte Adsorbate, grapheme, graphene quantum dot, magnetic anisotropy, transition metal
Nachgewiesen in Web of Science
Scopus
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