Hi, > If I try to calculate the transmission into the superconductor lead by > exchanging the calculation of the conductance in line 74 of the example file > by > > data.append(smatrix.transmission((1, 1), (0, 1))) > > I get an error message which tells me that there exists no second subblock. > Nevertheless, it should be possible to calculate the transmission of holes > from the normal lead into hole-like quasiparticles in the superconductor > lead. (This is what I have intended to do there.) > > So the question rather is why is there a hole degree of freedom in the normal > conductor but not in the superconductor lead?
The most likely explanation is that the scattering matrix is being solved for at an energy inside the superconducting gap, hence no propagating (quasiparticle) modes. What's the exact error message? Maybe it could be improved. Happy Kwanting, Joe
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