Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

被引：0

作者：

陈灵娜 ^{[1
,2
]}

马松山 ^{[1
]}

欧阳方平 ^{[1
]}

伍小赞 ^{[1
]}

肖金 ^{[1
]}

徐慧 ^{[1
]}

机构：

[1] School of Physics Science and Technology,Central South University

[2] School of Computer Science and Technology,University of South China

来源：

Chinese Physics B | 2010年 / 19卷 / 09期

关键词：

transport properties; negative differential resistance; first-principles; crossed graphene nanoribbons;

D O I：

暂无

中图分类号：

O488 [介观物理];

学科分类号：

070205 ; 0805 ; 080502 ; 0809 ;

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.

引用

页码：535 / 539

页数：5