Hello Kwant community, I am trying to calculate the conductivity with Kwant's KPM method of a 3D system with disorder and periodic boundary conditions (PBC) in every direction. Because of the onsite disorder potential, we don't have any translational symmetry. As far as I've tried, imposing the PBC doesn't seem to be a problem -- just put hoppings connecting opposite boundaries. And I don't see any error message when applying the KPM density of state/conductivity to this PBC system.
However, I noticed an earlier post mentioning the necessity of periodic velocity operators that Kwant doesn't implement. https://mail.python.org/archives/list/[email protected]/message/JVJWN2MBWRAXLG46SA2DR4YFFH2TKTSU/ This got me confused and worried. So can Kwant's KPM conductivity method treat such a system or not? Thank you.
