Exploitable magnetic anisotropy of magnetic CrBr3 monolayer
M. Luo+, Y. H. Shen*
+Department of Physics, Shanghai Polytechnic University, 201209 Shanghai, China
*Key Laboratory of Polar Materials and Devices, East China Normal University, 200241 Shanghai, China
Abstract
We investigated the influence of Li and F adsorption on the ferromagnetism and
magnetic anisotropy energy
of CrBr3 monolayer based on the first-principles calculations. It is observed that Li
adsorption can dramatically enhance its ferromagnetism, and tune its easy magnetization
axis to the in-plane direction from original out-of-plane. The monotonic enhancement of
in-plane magnetism in CrBr3 as the coverage of Li increases is attributed to electrostatic
doping induced by charge transfer between Li atoms and Br atoms. By contrast, the F
adsorption reduces the out-of-plane magnetism in CrBr3 as the coverage of F increases,
but keeps the original easy magnetization. Our results may open new promising
applications of CrBr3-based materials in spintronic devices.