Dear Chan, The current is calculated along a hopping for a kwant system. This means that it is calculated on any couple of sites hop=(site1,site2).
So if you provide a list of hoppings L=[(site1,site2), (site3,site4),(site6, site73)], the kwant module will return the currents for those hoppings. I hope this helps, Adel On Mon, Jul 27, 2020 at 3:36 PM Prof. CHAN Kwok Sum <apksc...@cityu.edu.hk> wrote: > Dear Kwant developer, > I want to define a spatially varying current operator which depends on the > two sites of a bond. Can this be done giving the “onsite” a function in the > current operator definition. According to the manual, the function for > onsite has the signature of a Hamiltonian on-site function, does it mean > the function can only have one site as its input and cannot have two sites > of a bond as input? If “onsite” cannot do the job, any suggestion of how to > solve the problem? > Regards, > KS Chan > > > Disclaimer: This email (including any attachments) is for the use of the > intended recipient only and may contain confidential information and/or > copyright material. If you are not the intended recipient, please notify > the sender immediately and delete this email and all copies from your > system. Any unauthorized use, disclosure, reproduction, copying, > distribution, or other form of unauthorized dissemination of the contents > is expressly prohibited. > -- Abbout Adel
