Edge-disorder-induced Anderson localization and conduction gap in graphene nanoribbons

被引：231

作者：

Evaldsson, M. ^{[1
]}

Zozoulenko, I. V. ^{[1
]}

Xu, Hengyi ^{[2
]}

Heinzel, T. ^{[2
]}

机构：

[1] Linkoping Univ, Dept Sci & Technol, S-60174 Norrkoping, Sweden

[2] Univ Dusseldorf, Condensed Matter Phys Lab, D-40225 Dusseldorf, Germany

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.78.161407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the effect of the edge disorder on the conductance of the graphene nanoribbons (GNRs). We find that already very modest edge disorder is sufficient to induce the conduction energy gap in the otherwise metallic GNRs and to lift any difference in the conductance between nanoribbons of different edge geometry. We relate the formation of the conduction gap to the pronounced edge-disorder-induced Anderson-type localization which leads to the strongly enhanced density of states at the edges, formation of surfacelike states, and to blocking of conductive paths through the ribbons.

引用

页数：4

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