期刊
PHYSICS LETTERS A
卷 384, 期 29, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physleta.2020.126754
关键词
Monolayer CrI3; Magnetic anisotropy energy; Li adsorption; First-principles calculation
资金
- NSFC [11574088]
- Innovative and Strong School Project of Guangzhou Maritime University [2014E073, G410304, F410102]
- Innovation and Start-up Business Education Project of Universities in Guangzhou [2019PT201]
Magnetic anisotropy energy (MAE) plays a key role for 2D magnetic materials, which have attracted significant attention for their promising applications in spintronic devices. Based on first-principles calculations, we have investigated the influence of surface adsorption on the ferromagnetism and MAE of monolayer CrI3. We find that Li adsorption can dramatically enhance its ferromagnetism, and tune its easy magnetization axis to the in-plane direction from original out-of-plane at certain coverage of Li. The monotonic enhancement of in-plane magnetism in CrI3 as the coverage of Li increases are attributed to electrostatic doping induced by charge transfer between Li atoms and I atoms, as supported by the charge doping simulation. The tunable robust magnetic anisotropy may open new promising applications of CrI3 -based materials in spintronic devices. (C) 2020 Elsevier B.V. All rights reserved.
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