Electronic, magnetic and optical properties of zigzag ZnO nanoribbons under the coupling action of electric field and strains

• Published in: Thin solid films 2023-03, Vol.768, p.139698, Article 139698
• Main Authors: Wen, Junqing, Cui, Weilin, Shi, Qiusheng, Yu, Fan, Lin, Pei, Li, Ning, Zhang, Jianmin
• Format: Article
• Language: English
• Subjects: Density functional theory; Electronic properties; Magnetic properties; Optical properties; Zigzag nanoribbons; Zinc oxide
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2023.139698

•The magnetic properties of Z8-ZnONRs are investigated under electric field and strains.•The origin of ferromagnetism caused by electric field and strains is analyzed.•The application of electric field improve absorption in visible region.•The system changes from ferromagnetic metal to magnetic semiconductor. The electronic, magnetic and optical properties of zigzag ZnO nanoribbons under electric field and strains are calculated using density functional theory. The results show that Z8-ZnONRs have ferromagnetism, which is mainly caused by the spin polarization of O atoms of O-terminated edge. Under the action of Y-axial electric field, the system has ferromagnetism, which is mainly contributed by O-2p and Zn-3d orbital electrons. Z8-ZnONRs have the characteristics of high-energy storage and low loss. The application of Y-axial electric field can enhance the absorption of visible light. The application of strains can adjust the electronic structures of Z8-ZnONRs and the system remains magnetic. Which mainly comes from the contribution of O atoms of O-terminated edge. The results show that the coupling of electric field and strains makes the system change from ferromagnetic metal to magnetic semiconductor.