Dear all, 

I am new to Kwant and try to play a little with some of the examples. I have a 
bit of experience in calculating the transmission in SN- or SNS-junction so I 
tried to play a little with the example in 2.6. "Superconductors: orbital 
degrees of freedom, conservation laws and symmetries".
Something strange come up with it.

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?

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