transmission eigenstate

[bubble]

Hi,
   What is the difference between the left and right contributions for the transmission eigenstate (TE) calculation? 
   For example, If the bias voltage is finite, I think that, for a given energy, the electron can be viewed as incident from the left and right electrodes at the same time, and the final current is the result of, e.g.  'right contribution minus left contribution'. And based on this consideration,  we can obtain the left and right contributions for the TE?
  Am I right?
Thank you !
   

[Jess Wellendorff]

As writtin in the online documentation for TransmissionEigenstate analysis, http://docs.quantumwise.com/manuals/Types/TransmissionEigenstate/TransmissionEigenstate.html#transmissioneigenstate-c,
the analysis method will by default compute the transmission eigenstates for electrons going from left to right, i.e. Bloch states in the left electrode that are transmitted to Bloch state in the right electrode. Perhaps the sign of the finite bias (forward/reverse bias) determines if you should consider Left or Right moving electrons, but I'm not sure.