Quantum Anomalous Hall Effect and Spin-filter Design Under the Control of Light and Exchange Field

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Hao, Xiamin^1 ; Zhao, Hui^1 ; Wu, Meimei^1 ; Sun, Yanmei^1 ; Li, Jing^1

School of Physics, Beihang University, Beijing, China^1

关键词: Anomalous hall effects;    Edge state;    Exchange fields;    External fields;    High-efficiency;    Polarizabilities;    Spin filters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022001/pdf
DOI  :  10.1088/1757-899X/322/2/022001

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

We advance the theory that achieving quantum Hall effect in silicone can be possible. We investigate that a bulk band gap can be reopened by regulating optical and exchange field. Through tuning these external fields, perfectly nearly 100% spin-filter can be achieved with interesting spin separated edge state and be verified by calculating the spin polarizability. This finding provides a platform for designing high efficiency spin-filter.