On the origin of magnetic anisotropy in two dimensional CrI 3
QuantaLab · International Iberian Nanotechnology Laboratory · +1 more institution
Abstract
The observation of ferromagnetic order in a monolayer of CrI 3 has been recently reported, with a Curie temperature of 45 Kelvin and off-plane easy axis. Here we study the origin of magnetic anisotropy, a necessary ingredient to have magnetic order in two dimensions, combining two levels of modeling, density functional calculations and spin model Hamiltonians. We find two different contributions to the magnetic anisotropy of the material, favoring off-plane magnetization and opening a gap in the spin wave spectrum. First, ferromagnetic super-exchange across the 90 degree Cr-I-Cr bonds, are anisotropic, due to the spin orbit interaction of the ligand I atoms. Second, a much smaller contribution that comes from…
Citation impact
- FWCI
- 23.91
- Percentile
- 100%
- References
- 54
Authors
2- JLJ L LadoCorresponding
QuantaLab, International Iberian Nanotechnology Laboratory
- JFJ Fernández-Rossier
QuantaLab, International Iberian Nanotechnology Laboratory, University of Alicante
Topics & keywords
- Curie temperature
- Magnetization
- Magnetic anisotropy
- Magnon
- Ferromagnetism
- Anisotropy
- Spin wave
- Spin (aerodynamics)