Spin filter effect in the zigzag graphene nanoribbons

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Liu, Chunmei^1 ; Li, Zhuan^1 ; Guo, Yu^1 ; Wang, Yang^1

Department of Fundamental Courses, Army Academy of Armored Forces, Beijing, China^1

关键词: Boron-doped graphene;    Contact position;    Graphene nanoribbons;    Non-equilibrium Green's function;    Spin filter effect;    Spin polarized transport;    Spin-polarized effects;    Zigzag graphene nanoribbons;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022046/pdf
DOI  :  10.1088/1757-899X/490/2/022046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The spin-related transport properties of graphene nanoribbons with zigzag edges which are partially coupled to Au linear-chain electrodes have been investigated by using non-equilibrium Green's function in combination with the density-functional theory. The results show that the partial contact with the electrodes will break the spin degeneracy, leading to the completely spin-polarized transport. Meanwhile, the spin-related properties are obviously dependent on the electrodes contact positions. For the boron doped graphene nanoribbons, the spin polarized effect is enhanced.