|Table of Contents|

Influence of Environment on Edge Band ofNarrow Zigzag Graphene Nanoribbons(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2018年02期
Page:
54-
Research Field:
·物理学·
Publishing date:

Info

Title:
Influence of Environment on Edge Band ofNarrow Zigzag Graphene Nanoribbons
Author(s):
Liu Na; Hu Bian; Liu Hong
School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China
Keywords:
zigzag graphene nanoribbons; hopping coefficient; band structure
PACS:
O469
DOI:
10.3969/j.issn.1001-4616.2018.02.010
Abstract:
Based on the tight binding Kane-Mele model describing the spin orbit coupling,we simulate the effect of environment on the edge states of graphene nanoribbons by changing the hopping coefficient between atoms at the edges. The theoretical results show that when adjusting both of the hopping coefficient at two edge sides,with the increase of the hopping coefficient,the Fermi wave vectors of the two sub-band structures corresponding to two edges,respectively,are close to 0.5,and the energy band gap decreases linearly. Further studies show that by adjusting the hopping coefficient at one single edge side,we can control the structure characteristics of the corresponding sub-band structures.

References:

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Last Update: 2018-11-06