Hi, I am trying to calculate conductance for a simple 2D nanowire with length L and width W by using the following formula: G=(2e^2/h)*Integrate[T(E)M(E)(-df/dE),dE] My questions are these: 1- Does KWANT include the number of modes, M(E), inside the transmission function or not. In other words does “smatrix.transmission(1,0)” contains only T(E) or M(E)*T(E) ? 2- If it does not include it, should I calculate the number of modes from the band structure of the leads? If it includes the number of modes, does it uses Heaviside(E-e1) or W*sqrt(2m(E-e1))/(pi*hbar)? It may be a very simple question, I tried to understand it from tutorial but it doesn’t mention “the number of modes” concept at all in the calculation of conductances. I’d appreciate any clarification. Best, Ran �