Tight-Binding Electronic Transport Application for graphene nanoribbon junctions¶

Select the parameters defining the structure of your GNR junction. Some options are only active for specific junction angle or lead width. Additional information on the parameters is displayed when the cursor is placed over the parameter name. Atoms can be removed from the initial junction structure by entering their numbers separated by a comma (,) and pressing 'Remove atoms'. Button 'Reset system' returns the junction structure to its initial state. Band structure of the selected GNR leads is displayed next to the junction structure. At present, the application allows defining only the junctions with identical armchair-edge GNR leads.

Select the energy range ('Min Energy' and 'Max Energy') and press 'Calculate' for computing the conductance and the density of states of the designed GNR junction. The results are compared to that of the ideal leads. Since this computation may take some time, its progress is indicated by the progress bar. You may copy the datasets to the clipboard.

Select an energy at which the local density of states, local current map and the wavefunction(s) of the lead channel(s) are displayed. The local current map displays the cumulative current from all channels involved at the selected energy.