Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons

doi:10.1088/1674-1056/26/11/116101

中国物理B ›› 2017, Vol. 26 ›› Issue (11): 116101-116101.doi: 10.1088/1674-1056/26/11/116101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons

Hong Liu(刘红)

Physics Department, Nanjing Normal University, Nanjing 210023, China

收稿日期:2017-05-08 修回日期:2017-08-09 出版日期:2017-11-05 发布日期:2017-11-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10947004) and the Government Scholarship for Overseas Studies of Jiangsu Province, China.

Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons

Hong Liu(刘红)

Physics Department, Nanjing Normal University, Nanjing 210023, China

Received:2017-05-08 Revised:2017-08-09 Online:2017-11-05 Published:2017-11-05
Contact: Hong Liu E-mail:liuhong3@njnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10947004) and the Government Scholarship for Overseas Studies of Jiangsu Province, China.

摘要/Abstract

摘要： Connecting one armchair carbon nanotube (CNT) to several zigzag graphene nanoribbons (ZGNRs) we find that the topologically-protected edge states of ZGNRs and the massless Dirac particle inherited from CNT still hold from the analysis of the band structure and the edge state. Furthermore, the lowest conductance step at the valley bottom increases proportionally with increasing the number of ZGNR wings. A novel conductance step of a peak occurs in the valley, which is two steps higher than the lowest step at the valley bottom. In addition, with increasing the number of ZGNR wings the width of the novel conductance step becomes narrow.

关键词: carbon nanotube, Dirac point, edge state, quantum conductance

Abstract: Connecting one armchair carbon nanotube (CNT) to several zigzag graphene nanoribbons (ZGNRs) we find that the topologically-protected edge states of ZGNRs and the massless Dirac particle inherited from CNT still hold from the analysis of the band structure and the edge state. Furthermore, the lowest conductance step at the valley bottom increases proportionally with increasing the number of ZGNR wings. A novel conductance step of a peak occurs in the valley, which is two steps higher than the lowest step at the valley bottom. In addition, with increasing the number of ZGNR wings the width of the novel conductance step becomes narrow.

Key words: carbon nanotube, Dirac point, edge state, quantum conductance

中图分类号: (Structure of nanotubes (hollow nanowires))

61.46.Np

61.48.Gh (Structure of graphene) 73.63.-b (Electronic transport in nanoscale materials and structures) 73.63.Fg (Nanotubes)

刘红. Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons[J]. 中国物理B, 2017, 26(11): 116101-116101.

Hong Liu(刘红). Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons[J]. Chin. Phys. B, 2017, 26(11): 116101-116101.

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Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons

Novel conductance step in carbon nanotube with wing-like zigzag graphene nanoribbons

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