[Kwant] Re: (no subject)

Dear Chan, I would suggest you to define two systems, a real one whose wave-functions are the one corresponding to the physical system you investigate and a second auxiliary system in which you define the special two site dependent function as a hopping in the Hamiltonian. Therefore, computing the current in the second system using the wave functions of the first one should correspond to what you wanted to do. For the 'onsite' function I think it doesn't accept two site dependence. I hope this makes sense, Regards, Ousmane