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Large effect of metal substrate on magnetic anisotropy of Co on hexagonal boron nitride
- Title
- Large effect of metal substrate on magnetic anisotropy of Co on hexagonal boron nitride
- Authors
- Gallardo, Iker; Arnau, Andres; Delgado, Fernando; Baltic, Romana; Singha, Aparajita; Donati, Fabio; Wackerlin, Christian; Dreiser, Jan; Rusponi, Stefano; Brune, Harald
- Ewha Authors
- Fabio Donati
- SCOPUS Author ID
- Fabio Donati
- Issue Date
- 2019
- Journal Title
- NEW JOURNAL OF PHYSICS
- ISSN
- 1367-2630
- Citation
- NEW JOURNAL OF PHYSICS vol. 21
- Keywords
- magnetic anisotropic energy; x-ray absorption; density functional theory; multiplet calculations
- Publisher
- IOP PUBLISHING LTD
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- 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).
- DOI
- 10.1088/1367-2630/ab3077
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
- Files in This Item:
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