Dear Thomas, If you take the usual symmetry: syst = kwant.Builder(kwant.TranslationalSymmetry((1,0,0), (0,1,0), (0,0,1))) your plot becomes uniform. In general, you need to make sure that the sites in the cut of the 3D system have the same order as in the new 2D system you used for the plot.
I hope this helps, Regards, Adel On Thu, Apr 10, 2025 at 12:34 PM Thomas Bredewoud via Kwant-discuss < kwant-discuss@python.org> wrote: > Dear all, > Visualizing current flow in 3D systems is challenging. Kwant provides > built-in features for 2D systems, but does not support 3D current > visualization. To still gain some insight into the current flow in my 3D > nanowire system, I analyze the current on a single 2D facet of the nanowire. > However, the resulting current distribution appears inhomogeneous, which > is surprising given that the physical system is homogeneous. I have > attached a minimal example (current_visualization.py) that demonstrates the > issue. > Has anyone encountered a similar situation? Could this be a visualization > artifact, or might it indicate an issue with how the current is computed in > 3D systems? > Any suggestions or insights would be greatly appreciated. > Best regards, > Thomas > > -- Abbout Adel
