Modulating doping and interface magnetism ofepitaxial graphene on SiC(0001)

doi:10.1088/1674-1056/25/1/017302

Abstract On the basis of first principles calculations, we report that the type and density of charge carriers of epitaxial graphene on SiC(0001) can be deliberately controlled by decorating the buffer layer with specific atoms (i.e., F, Cl, O, or N). More importantly, a fine tuning of the doping behavior from intrinsic n-type to charge neutrality to p-type and interface magnetism is achieved via increasing the doping concentration of F atoms on the buffer layer. Our results suggest an interesting avenue to the application of epitaxial graphene in nanoscale electronic and spintronic devices.

Keywords: graphene interface magnetism doping SiC

Received: 13 July 2015
Revised: 21 September 2015
Accepted manuscript online:

PACS:	73.22.Pr	(Electronic structure of graphene)
	81.05.ue	(Graphene)
	75.70.Cn	(Magnetic properties of interfaces (multilayers, superlattices, heterostructures))

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61335006, 61378073, and 61527817), the Beijing Municipal Science and Technology Committee, China (Grant No. Z151100003315006), and Fundamental Research Funds for the Central Universities of Beijing Jiaotong University, China (Grant No. 2012YJS123).

Corresponding Authors: Da-Wei He
E-mail: dwhe@bjtu.edu.cn

Cite this article:

Pan Zhou(周攀) and Da-Wei He(何大伟) Modulating doping and interface magnetism ofepitaxial graphene on SiC(0001) 2016 Chin. Phys. B 25 017302

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Modulating doping and interface magnetism ofepitaxial graphene on SiC(0001)

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