Electronic transport through a silicene-based zigzag and armchair junction

被引：18
|
作者：
Zha, Dace [1 ]
Chen, Changpeng [1 ,2 ]
Wu, Jinping [2 ]
机构：
[1] Wuhan Univ Technol, Sch Sci, Wuhan 430070, Peoples R China
[2] China Univ Geosci, Mat Sci & Chem Engn Coll, Wuhan 430074, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2015年 / 219卷
基金：
中国国家自然科学基金;
关键词：
Silicene nanoribbons; Zigzag and armchair junction; Negative differential resistance; Transport properties; GRAPHENE;
D O I：
10.1016/j.ssc.2015.06.018
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using density functional theory and non-equilibrium Green's function technique, we performed theoretical investigations on the transport properties of several ZAZ SiNRs junctions (a similar kind of silicene molecules junction combined by zigzag and armchair silicene nanoribbons). It is found that the differential conductances of the three systems decrease with an order of 5-ZAZ > 4-ZAZ > 3-ZAZ. Particularly, the Negative differential resistance (NDR) can be observed within certain bias voltage range only in 3-ZAZ SiNRs. In order to elucidate the mechanism the NOR behavior, the transmission spectra and molecular projected self-consistent Hamiltonian (MPSH) states are discussed in details. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：21 / 24
页数：4
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