Title :
Transport characteristics of nanoconstricted graphene with and with out point defects
Author :
Deepak, S. ; Manoharan, M. ; Mizuta, Hiroshi
Author_Institution :
Design & Manuf. (IIITD&M Kancheepuram), Indian Inst. of Inf. Technol., Chennai, India
Abstract :
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.
Keywords :
Green´s function methods; density functional theory; electron beam effects; electronic density of states; graphene; ion beam effects; nanoribbons; tunnelling; vacancies (crystal); C; Stone-Wales defect; armchair graphene nanoribbons; density functional theory; double vacancy defect; electron tunnelling; electron-helium ion beam exposure; electronic transport properties; nanoconstriction; nonequilibrium Green´s function method; point defects; single vacancy defect; total density-of-states; DFT; graphene; point defects; tunnel junction;
Conference_Titel :
Nanoscience, Engineering and Technology (ICONSET), 2011 International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4673-0071-1
DOI :
10.1109/ICONSET.2011.6167968
