Negative differential resistance behaviour in N-doped crossed graphene nanoribbons

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 resista...

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Bibliographic Details
Published inChinese physics B Vol. 19; no. 9; pp. 531 - 535
Main Author 陈灵娜 马松山 欧阳方平 伍小赞 肖金 徐慧
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2010
Subjects
Electronics
Graphene
Mathematical analysis
Nanocomposites
Nanomaterials
Nanostructure
Shoulders
Transport properties
带交叉
掺杂石墨
格林函数方法
电子输运特性
第一性原理计算
纳米带
负微分电阻
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/19/9/097301

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Summary: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.
Bibliography:TL627
transport properties, negative differential resistance, first-principles, crossed graphene nanoribbons
TN312.2
11-5639/O4
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SourceType-Scholarly Journals-1
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/9/097301