Tunable electronic structure and magnetic anisotropy in bilayer ferromagnetic semiconductor Cr₂Ge₂Te₆.

ABSTRACT: The emergence of ferromagnetism in two-dimensional van der Waals materials has aroused broad interest. However, the ferromagnetic instability has been a problem remained. In this work, by using the first-principles calculations, we identified the critical ranges of strain and doping for the bilayer Cr₂Ge₂Te₆ within which the ferromagnetic stability can be enhanced. Beyond the critical range, the tensile strain can induce the phase transition from the ferromagnetic to the antiferromagnetic, and the direction of magnetic easy axis can be converted from out-of-plane to in-plane due to the increase of compressive strain, or electrostatic doping. We also predicted an electron doping range, within which the ferromagnetism can be enhanced, while the ferromagnetic

SUBMITTER: Ren WN 

PROVIDER: S-EPMC7854638 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature