| Electric control of magnetism in low-dimensional magnets on ferroelectric surfaces | |||||
| 작성자 | 김** | 작성일 | 2018-08-30 | 조회수 | 70 |
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Journal Article published May 2017 in AIP Advances volume 7 issue 5 on page 055816
Authors: Dorj Odkhuu, Tumurbaatar Tsevelmaa, S. H. Rhim, Soon Cheol Hong, Deleg Sangaa https://doi.org/10.1063/1.4975131 ABSTRACT Employing first-principles electronic structure calculations, we have studied the electric field controls of magnetism and magnetic anisotropy energy (MAE) of the Fe adatoms on ferroelectric BaTiO3 and PbTiO3 surfaces. Remarkably, those effects exhibit dependence of the level of coverage as well as adsorption site of Fe atoms. While the magnitude of MAE is shown tunable by ferroelectric polarization in the full coverage of Fe monolayer, the direction of magnetization undergoes a transition from perpendicular to in-plane for the half or lower coverages. This magnetization reorientation is mainly ascribed to the site-dependent Fe d?O p hybridization, as a consequence of the formation of FeTiO2 layer at the surface. |
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