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양자나노과학 연구단
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Large effect of metal substrate on magnetic anisotropy of Co on hexagonal boron nitride

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Title
Large effect of metal substrate on magnetic anisotropy of Co on hexagonal boron nitride
Author(s)
Gallardo, I; Arnau, A; Delgado, F; Baltic, R; Aparajita Singha; Fabio Donati; Wackerlin, C; Dreiser, J; Rusponi, S; Brune, H
Publication Date
2019-07
Journal
NEW JOURNAL OF PHYSICS, v.21, no., pp.073053 -
Publisher
IOP PUBLISHING LTD
Abstract
We combine x-ray absorption spectroscopy (XAS), x-raymagnetic circular dichroism (XMCD) and x-ray magnetic linear dichroism (XMLD) data with first principles density functional theory (DFT) calculations and amultiorbital many-body Hamiltonian approach to understand the electronic and magnetic properties of Co atoms adsorbed on h-BN/Ru(0001) and h-BN/Ir(111). The XAS line shape reveals, for both substrates, an electronic configuration close to 3d(8), corresponding to a spin S = 1 Magnetic field dependent XMCD data show large (14 meV) out-of-plane anisotropy on h-BN/Ru(0001), while it is almost isotropic (tens of mu eV) on h-BN/Ir(111). XMLD data together with both DFT calculations and the results of the multiorbital Hubbard model suggest that the dissimilar magnetic anisotropy originates from different Co adsorption sites, namely atop Non h-BN/Ru(0001) and 6-fold hollow on h-BN/Ir(111). ©2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft
URI
https://pr.ibs.re.kr/handle/8788114/6524
ISSN
1367-2630
Appears in Collections:
Center for Quantum Nanoscience(양자나노과학 연구단) > Journal Papers (저널 논문)
Files in This Item:
F Donati_Large effect of metal substrate on magnetic anisotropy of Co on hexagonal boron nitride_Gallardo_NJP2019_Magnetic_anisotropy_Co_hBN.pdfDownload

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