Impurity and edge roughness scattering in graphene nanoribbons: the Boltzmann approach

被引：13

作者：

Xu, Hengyi ^{[1
]}

Heinzel, Thomas ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2012年 / 24卷 / 45期

关键词：

QUANTUM WIRES; TRANSPORT;

D O I：

10.1088/0953-8984/24/45/455303

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The conductivity of graphene nanoribbons in the presence of bulk impurities and edge roughness is studied theoretically using the Boltzmann transport equation for quasi-one-dimensional systems. As the number of occupied subbands increases, the conductivity due to bulk impurities converges towards the two-dimensional case. It is shown that the dependence of the conductivity generated by edge roughness scattering depends in a distinctly different way on the sample parameters than the conductivity due to bulk scattering. The Boltzmann model furthermore predicts the amplitude of the edge-roughness-induced magnetoconductance dip as a function of the amplitude and the correlation length of the edge roughness.

引用

页数：9

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