Open AccessInfluence of edge reconstruction on the electron transport in zigzag graphene nanoribbon
Author(s) -
Biao Li,
Dahai Xu,
Hui Zeng
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.117102
Subject(s) - zigzag , graphene , materials science , enhanced data rates for gsm evolution , fermi level , condensed matter physics , conductance , graphene nanoribbons , electron , electron transport chain , fermi gas , electronic structure , fermi energy , nanotechnology , physics , chemistry , geometry , telecommunications , mathematics , quantum mechanics , computer science , biochemistry
Edge reconstructions of graphene nanoribbons and their stable defective configurations were identified by experimental characterization. First principles calculations are performed to evaluate the effects of atomic edge arrangement on the electronic transport properties of zigzag graphene nanoribbons. It is found that these two defective edge structures affect effectively the high stable nanostructure configuration and give rise to pronounced modifications on electronic bands, leading to the shift of Fermi level as well as the occurrence of resonant energies. Both of these two atomic reconstructions would limit the electron transport around the Fermi level, and result in the complete resonant backscattering taking place at different locations. The suppression of conductance is not only related with increasing defect size, but more sensitive to the distribution of defect state, and the modifications on the electronic bands that are influenced by the edge reconstructions.