Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

doi:10.1088/1674-1056/19/9/097301

Abstract By using first-principles calculations and nonequilibrium Green's function technique, we study elastic transport properties of crossed graphene nanoribbons. The results show that the electronic transport properties of molecular junctions can be modulated by doped atoms. Negative differential resistance (NDR) behaviour can be observed in a certain bias region, when crossed graphene nanoribbons are doped with nitrogen atoms at the shoulder, but it cannot be observed for pristine crossed graphene nanoribbons at low biases. A mechanism for the negative differential resistance behaviour is suggested.

Keywords: transport properties negative differential resistance first-principles crossed graphene nanoribbons

Received: 22 March 2010
Revised: 06 April 2010
Accepted manuscript online:

PACS:	7320A
	7320H
	7335A
	7360T

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10325415 and 50504017), the Natural Science Foundation of Hunan Province, China (Grant No. 07JJ3102), and the Science Develop Foundation of Central South University, China (Grant Nos. 08SDF02 and 09SDF09).

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Chen Ling-Na(陈灵娜), Ma Song-Shan(马松山), Ouyang Fang-Ping(欧阳方平), Wu Xiao-Zan(伍小赞), Xiao Jin(肖金), and Xu Hui(徐慧) Negative differential resistance behaviour in N-doped crossed graphene nanoribbons 2010 Chin. Phys. B 19 097301

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Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

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