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Chin. Phys. B, 2015, Vol. 24(5): 057202    DOI: 10.1088/1674-1056/24/5/057202
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Spin transport in a Zigzag normal/ferromagnetic graphene junction

Shi Hao-Sheng (史豪晟), Vahram L. Grigoryan
Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
Abstract  We study magnetic proximity effect induced low-energy spin transport in the normal/ferromagnetic junction of a semi-infinite zigzag graphene nanoribbon. Due to the absence of a spin flip in a single interface, the spin transfer in this model can be described by the “two-spin channel” model. We identify each spin channel as either a perfect conducting or a non-conducting channel. This feature leads to spin filter in symmetric zigzag graphene nanoribbon and spin precession in antisymmetric zigzag graphene nanoribbon, and helps to directly determine the exchange-splitting intensity directly, even without an external auxiliary bias.
Keywords:  graphene junction      spin filter      spin transfer torque      magnetic proximity effect  
Received:  16 July 2014      Revised:  27 October 2014      Accepted manuscript online: 
PACS:  72.25.Mk (Spin transport through interfaces)  
Corresponding Authors:  Shi Hao-Sheng     E-mail:  11210190010@fudan.edu.cn
About author:  72.25.Mk

Cite this article: 

Shi Hao-Sheng (史豪晟), Vahram L. Grigoryan Spin transport in a Zigzag normal/ferromagnetic graphene junction 2015 Chin. Phys. B 24 057202

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