With these three requirements in mind, we start by assessing the current density and the resulting magnetic fields of ortho-, para-, and meta-connected benzene molecules as reference Figure : Current density (top row), and magnetic field (middle and bottom row) of ortho-, para-, and meta-linked benzenes. Meta-benzene is also shown with the bias opened around the HOMO resonance to achieve high current. The magnetic field is plotted as a vector field (middle row) and as the point where the field is strongest (bottom row).