Transport properties of asymmetric zigzag graphene nano-ribbon built by carbon vacancy in edge

Frontiers in Theoretical and Applied Physics/UAE 2017

Jafari, H.^1 ; Dianat, B.^1 ; Afshar, M.^1

Materials Simulation Laboratory, Physics Department, Iran University of Science and Technology, Tehran, Iran^1

关键词: A-carbon;    Carbon vacancy;    Electronic transport;    Electronic transport properties;    Graphene nano-ribbon;    Negative differential resistances;    Non-equilibrium Green's function;    Single layer;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/869/1/012025/pdf
DOI  :  10.1088/1742-6596/869/1/012025

来源: IOP

【 摘 要 】

Using nonequilibrium Green's functions in combination with density functional theory, we investigated the electronic transport behaviors of single layer zigzag graphene Nano-ribbon (ZGNR) with a Carbon vacancy in edge. The results show that electronic transport properties of the asymmetry ZGNR can be modulated by vacancy in edges, and prominent negative differential resistance (NDR) can be observed. These results may be useful for designing practical devices based on graphene Nano-ribbons.