Magnetism of 4f-atoms adsorbed on metal and graphene substrates

0521298 - FZÚ 2020 RIV NL eng J - Journal Article
Shick, Alexander - Denisov, A.Yu.
Magnetism of 4f-atoms adsorbed on metal and graphene substrates.
Journal of Magnetism and Magnetic Materials. Roč. 475, Apr (2019), s. 211-215. ISSN 0304-8853. E-ISSN 1873-4766
R&D Projects: GA ČR GA18-06240S; GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : electronic structure * strong electron correlations * magnetism
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.717, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.jmmm.2018.11.078

The electronic structure and magnetism of individual Dy atom adsorbed on the graphene/Ir(1 1 1) surface is investigated using the combination of the density functional theory with the Hubbard-I approximation to the Anderson impurity model (DFT + HIA). The divalent Dy2+ adatom is found, with the magnetic moment of 9.4-9.6 mu(B), depending on the placement of the graphene on the Ir(1 1 1) surface, in an external magnetic field. The spin and orbital magnetic moments are evaluated, and compared with the X-ray magnetic circular dichroism (XMCD) data. The positive magnetic anisotropy energy determines the out-of-plane orientation of the Dy adatom magnetic moment.
Permanent Link: http://hdl.handle.net/11104/0305926