Symmetry-dependent transport properties and magnetoresistance in zigzag silicene nanoribbons

被引：118

作者：

Kang, Jun ^{[1
]}

Wu, Fengmin ^{[2
]}

Li, Jingbo ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China

[2] Zhejiang Normal Univ, Jinhua 321004, Zhejiang, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 23期

关键词：

Calculations - Logic devices - Transport properties - Magnetoresistance - Silicene;

D O I：

10.1063/1.4726276

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

First principles calculations are performed to study the transport properties of zigzag silicene nanoribbons (ZSiNRs). ZSiNRs show symmetry-dependent transport properties similar to those of zigzag graphene nanoribbons, although the sigma mirror plane is absent. Even-N and odd-N ZSiNRs have very different current-voltage relationships, which can be attributed to the different parity of their pi and pi* bands under c(2) symmetry operation with respect to the center axis. Moreover, magnetoresistance effect is observed in even-N ZSiNRs, and the order can reach 1 000 000%. On the basis of these interesting transport properties, ZSiNR-based logic devices, such as NOT, AND, and OR gates, are proposed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4726276]

引用

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