title: Low-dimensional ScO2 with tunable electronic and magnetic properties: first-principles studies.
abstract: Transition metal dichalcogenides (TMDs) have attracted extensive attention due to their appealing properties for device applications. In this work, we explored the structure stability, electronic structure and magnetism of low-dimensional scandium dioxides, ScO2, by using the first-principles calculations. The results demonstrate that bulk ScO2, monolayers and nanoribbons (NRs) are thermodynamically stable, implying a high possibility of fabricating ScO2 nanocrystals in experiments. Despite the metallic characteristics of bulk ScO2, low-dimensional ScO2 possesses various electronic behaviors that can be further modulated by crystal structure and dimensionality. The results also show that the ground states of ScO2 monolayers and NRs are ferromagnetic (FM) with about 1 μ B per ScO2 formula. Our studies expand a new realm in low-dimensional TMDs, with tunable electronic and magnetic properties.
authors.affiliation: Normal College, Shenyang University, Shenyang 110044, People's Republic of China. Beijing Computational Science Research Center, Beijing 100094, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Chuan-Jia
authors.initials: CJ
authors.lastname: Tong
authors.forename: Jian
authors.initials: J
authors.lastname: Wu
authors.forename: Wen-Jin
authors.initials: WJ
authors.lastname: Yin
authors.forename: Yan-Ning
authors.initials: YN
authors.lastname: Zhang