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Chin. Phys. B, 2017, Vol. 26(11): 116101    DOI: 10.1088/1674-1056/26/11/116101
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

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

Hong Liu(刘红)
Physics Department, Nanjing Normal University, Nanjing 210023, China
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.
Keywords:  carbon nanotube      Dirac point      edge state      quantum conductance     
Received:  08 May 2017      Published:  05 November 2017
PACS:  61.46.Np (Structure of nanotubes (hollow nanowires))  
  61.48.Gh (Structure of graphene)  
  73.63.-b (Electronic transport in nanoscale materials and structures)  
  73.63.Fg (Nanotubes)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10947004) and the Government Scholarship for Overseas Studies of Jiangsu Province, China.
Corresponding Authors:  Hong Liu     E-mail:  liuhong3@njnu.edu.cn

Cite this article: 

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

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