Hi, thank you for the quick answer. I had a similiar thought but then I am wondering why I do not get the error for an electron transmission
"data.append(smatrix.transmission((1, 0), (0, 0)))" Nevertheless, here is the error message for the hole example: Traceback (most recent call last): File ".../TKwant/Superconductor.py", line 120, in <module> main() File ".../TKwant/Superconductor.py", line 114, in main plot_conductance(syst, energies=[0.002 * i for i in range(-10, 100)]) File ".../TKwant/Superconductor.py", line 74, in plot_conductance data.append(smatrix.transmission((1, 1), (0, 1))) File "...\TKwant\venv\lib\site-packages\kwant\solvers\common.py", line 871, in transmission return self._transmission(lead_out, lead_in) File "...\TKwant\venv\lib\site-packages\kwant\solvers\common.py", line 857, in _transmission return np.linalg.norm(self.submatrix(lead_out, lead_in)) ** 2 File "...\TKwant\venv\lib\site-packages\kwant\solvers\common.py", line 677, in submatrix return self.data[self.block_coords(lead_out, lead_in)] File "...\TKwant\venv\lib\site-packages\kwant\solvers\common.py", line 658, in block_coords return self.out_block_coords(lead_out), self.in_block_coords(lead_in) File "...\TKwant\venv\lib\site-packages\kwant\solvers\common.py", line 838, in out_block_coords self.out_block_offsets[lead_ind][block_ind + 1]) IndexError: index 2 is out of bounds for axis 0 with size 2