Coupled nano-rings: strain and magnetic field effects

Transmission properties of a linear chain of nanorings with 6 quantum dots (QD) per ring are investigated with and without magnetic field effects. The rings are connected serially by a linear segment. A tightbinding Hamiltonian is solved exactly, giving the transmission for any number of rings in series. The Aharonov-Bohm effect shifts and splits the transmission band structure and the Zeeman effect splits the transmission into spin-polarized bands. Multiple system parameters, including coupling integrals and ring number, are varied and shown to have significant effects on the transmission spectrum. The system and results provide generalized conduction properties of a 1-ring wide graphene nanoribbon in the armchair configuration.