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Transport characteristics of nanoconstricted graphene with and with out point defects

Using calculations based on Density Functional Theory and Non Equilibrium Green's Function techniques, we calculate the electronic transport properties of nanoconstriction introduced armchair graphene nanoribbons (AGNR) and analyze its transport characteristics. We study the change in transport properties when point defects like Single Vacancy defect, Double Vacancy defect and Stone-Wales defect are introduced in the nanoconstricted region. These defects can be created during electron/Helium ion beam exposure.