| Autor: |
Liu, Jun, Wang, Yang, Wang, Lian-Yan, Yao, Qian, Huang, Cheng-Cai, Huang, Hao-Yu, Li, Deng-Feng |
| Zdroj: |
European Physical Journal Plus; Mar2023, Vol. 138 Issue 3, p1-9, 9p |
| Abstrakt: |
Half-metallic nanosheets are attracting increasing attention due to their advantages such as low power consumption, high storage density, non-volatile information in spintronics. Furthermore, the nanometer multiferroic materials exhibit new singular abundant physical capabilities and application potential. In this paper, several non-vdW multiferroic half-metallic nanosheets ACr2S4 (A = Li, Na, K and Rb) were predicted by the first-principles calculations. It was found that the geometric structures of these nanosheets are stable and their ground states are all ferromagnetic. The half-metallicity of these nanosheets is all stable within a certain biaxial stain range and their magnetic moments per unit always retain at 5.00 μB, which origin mainly from Cr-ions and partially from the S-ions. There is strong ferromagnetic coupling between Cr-ions and weak antiferromagnetic coupling between Cr-ions and S-ions. The half-metallicity of these nanosheets may be improved significantly by the biaxial tensile strain. Based on the crystal field theory, the two-center electronic structures t2g6↑t2g4↓eg3↑were built, which provides direct physical insights into the origin of the half-metallicity and the magnetic moment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink