SIM-RUC
Surface & Interface Modeling
for Emerging Nanomaterials and Devices

Switchable valley injection into graphene

Chen Hu1, Wengang Lu2*, Wei Ji3, Guanghua Yu1, Yu Yan4 and Jiao Teng1*

1 Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
2 Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
3Department of Physics, Renmin University of China, Beijing, 100872, China
4Key Laboratory for Environmental Fracture (MOE), University of Science and Technology Beijing, Beijing, 100083, China

DOI:    Publication Date: 


Abstract:

The generation and control of the valley-polarized currentplay the key roles in valleytronics applications, but still remain as tough challenges. We propose a general idea of switchable valley injection, and predict theoretically that a ferromagnet-covered graphene junction is a valley-injector, whose ON/OFF state can be easily switched only by changing the magnetic direction. This scheme can be extended to other 2D crystals and may pave a new way to the valleytronic practical applications.


Keywords:


View: Phys. Rev. B  92, 115404 (2015)     Local Copy

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