Low-energy electron transport in semimetal graphene ribbon junctions

被引：0
作者：
Yu. O. Klymenko
O. Shevtsov
机构：
[1] Space Research Institute of NAS and NSA of Ukraine,
[2] National Taras Shevchenko University of Kyiv,undefined
来源：
The European Physical Journal B | 2009年 / 72卷
关键词：
72.10.-d Theory of electronic transport; scattering mechanisms; 73.63.-b Electronic transport in nanoscale materials and structures; 73.63.Nm Quantum wires; 73.63.Rt Nanoscale contacts;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Based on the nearest-neighbor tight-binding model, we present analytical description of single-mode electron transport through a common-edged junction connecting two semimetal armchair ribbons of different width. The results obtained demonstrate the transmission suppression in the vicinity of the neutrality point except for the junction of the ribbons consisting of 3p-1 and 3p+2 dimer lines, p is odd. Unlike other interconnections, this junction is shown to be free of local levels arising at the junction interface and exhibits electron backscattering to be inversely as the square of 2p+1. We also demonstrate that non-zero propagation through a graphene junction can be described by the same relation as that for linear undimerized chain of atoms with one defect bond.
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页码：203 / 209
页数：6
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