| Autor: |
Zhang, Lixin, Wang, Naibin, Zhao, Xiuwen, Hu, Guichao, Ren, Junfeng, Yuan, Xiaobo |
| Zdroj: |
Journal of Materials Chemistry C; 11/7/2024, Vol. 12 Issue 41, p16981-16988, 8p |
| Abstrakt: |
The physical properties induced by layer stacking in two dimensional materials are fascinating. Here, a hexagonal Kagome lattice V2Se3 is constructed to investigate the dependence of the quantum anomalous Hall effect (QAHE) and the phase transition on the different stacking. Based on first principles calculations, the tight-binding model, and the irreducible representations, it is found that QAHE with a Chern number of 1 can be realized in the V2Se3 monolayer. While the V2Se3 bilayer is constructed, the interlayer interaction affects the Dirac cone, so QAHE with Chern number changes from −1 to 2 can be obtained by changing the different stacking patterns. On the other hand, applying biaxial tensile strain and changing stacking patterns in the V2Se3 bilayer will affect the d orbitals of the V atoms. In bilayer V2Se3, applying biaxial tensile strain affects the d orbitals of the V atoms that constitute the Dirac cone, and then a topological phase transition appears. Moreover, changing the stacking patterns induces the hybridization competition of the d orbitals, which leads to a magnetic phase transition. Constructing a Kagome bilayer and changing their stacking patterns paves a pathway in exploring quantum effects of topology and magnetism in layered materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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