Spin transport in a Zigzag normal/ferromagnetic graphene junction

doi:10.1088/1674-1056/24/5/057202

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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