Conductance quantization in graphene nanoribbons: adiabatic approximation

被引：16
|
作者：
Katsnelson, M. I. [1 ]
机构：
[1] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 ED Nijmegen, Netherlands
来源：
EUROPEAN PHYSICAL JOURNAL B | 2007年 / 57卷 / 03期
关键词：
D O I：
10.1140/epjb/e2007-00168-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A theory of electron states for graphene nanoribbons with a smoothly varying width is developed. It is demonstrated that the standard adiabatic approximation allowing to neglect the mixing of different standing waves is more restrictive for the massless Dirac fermions in graphene than for the conventional electron gas. For the case of zigzag boundary conditions, one can expect a well-pronounced conductance quantization only for highly excited states. This difference is related to the relativistic Zitterbewegung effect in graphene.
引用
收藏
页码：225 / 228
页数：4
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