Abstract
We investigate transport through bulk-disordered graphene nanoribbons and nanoconstrictions. Employing a modular recursive Green's function algorithm, we study devices of realistic size (up to 100.000 nm2). By Fourier transforming the scattered wave we disentangle inter-valley scattering between the two Dirac cones of graphene and intra-valley scattering on a single cone. We find that different types of defects leave characteristic signatures on transport properties which we can describe with a simplified scattering model. A quantitative comparison with recent experimental data is performed which yields insights into the disorder concentration in realistic samples. Prototype defects to simulate (a) sublattice-symmetry breaking scattering at single vacancies and (b) sublattice-symmetry conserving scattering at double vacancies.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
