Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

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

中国物理B ›› 2010, Vol. 19 ›› Issue (9): 97301-097301.doi: 10.1088/1674-1056/19/9/097301

Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

马松山¹, 欧阳方平¹, 伍小赞¹, 肖金¹, 徐慧¹, 陈灵娜²

(1)School of Physics Science and Technology, Central South University, Changsha 410083, China; (2)School of Physics Science and Technology, Central South University, Changsha 410083, China; School of Computer Science and Technology, University of South China, Hengyang 421001, China

收稿日期:2010-03-22 修回日期:2010-04-06 出版日期:2010-09-15 发布日期:2010-09-15
基金资助:
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 (

Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

Chen Ling-Na(陈灵娜)^a)b), Ma Song-Shan(马松山)^a), Ouyang Fang-Ping(欧阳方平)^a), Wu Xiao-Zan(伍小赞)^a), Xiao Jin(肖金)^a), and Xu Hui(徐慧)^a)^†

^a School of Physics Science and Technology, Central South University, Changsha 410083, China; ^b School of Computer Science and Technology, University of South China, Hengyang 421001, China

Received:2010-03-22 Revised:2010-04-06 Online:2010-09-15 Published:2010-09-15
Supported by:
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).

摘要/Abstract

摘要： 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.

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.

Key words: transport properties, negative differential resistance, first-principles, crossed graphene nanoribbons

中图分类号:

7320A

陈灵娜, 马松山, 欧阳方平, 伍小赞, 肖金, 徐慧. Negative differential resistance behaviour in N-doped crossed graphene nanoribbons[J]. 中国物理B, 2010, 19(9): 97301-097301.

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[J]. Chin. Phys. B, 2010, 19(9): 97301-097301.

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Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

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