Spin-polarized electron transport in hybrid graphene-BN nanoribbons

National Conference on Theory of Magnetism

Gao, Song^1 ; Lu, Wei^1 ; Zheng, Guo-Hui^1 ; Jia, Yalei^1 ; Ke, San-Huang^1,2

MOE Key Labortoray of Microstructured Materials, School of Physics Science and Engineering, Tonji University, 1239 Siping Road, Shanghai

200092, China^1

Beijing Computational Science Research Center, 10 Dongbeiwang West Road, Beijing

100094, China^2

关键词: Carbon chains;    Energy windows;    Experimental realizations;    First principles;    Non equilibrium green's function method;    Spin filters;    Spin-polarized electron transport;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/827/1/012012/pdf
DOI  :  10.1088/1742-6596/827/1/012012

来源: IOP

【 摘 要 】

The experimental realization of hybrid graphene and h-BN provides a new way to modify the electronic and transport properties of graphene-based materials. In this work, we investigate the spin-polarized electron transport in hybrid graphene-BN zigzag nanoribbons by performing first-principles nonequilibrium Green's function method calculations. A 100% spin-polarized electron transport in a large energy window around the Fermi level is found and this behavior is independent of the ribbon width as long as there contain 3 zigzag carbon chains. This behavior may be useful in making perfect spin filters.