Dear Chong Wang, I suppose that empty scattering centre with leads mean transport takes place between the two reservoirs in ballistic regime; because the leads act as the 1D or 2D conductors without any potential barrier in the path of the transport. In my idea, should we not model such system as a 1D QWR or 2D QW? The unit cell copied from any of the leads would ensure the continuity of the conductor in which ballistic transport without any scattering takes place. Cheers! K.K.Ghosh On Wed, 11 May 2016 17:51:55 +0530 Anton Akhmerov wrote
Hi Chong Wang,
You just need to create a scattering region that corresponds to a unit
cell of one of the leads.
On Wed, May 11, 2016 at 1:59 PM, Chong Wang wrote:
I want to calculate conductance between two different leads. This is what I
- build an empty center area. This does not work because kwant doesn't know
how to attach leads to an empty area.
- use lead_1.attach_lead(lead_2). Kwant.plot does not correctly plot two
leads, so I suppose it doesn't work.
I don't want to build a center area that is the same with one of the leads,
because my system is very large and I suppose this will be time-consuming.
Ph. D. candidate
Institute of Advanced Study, Tsinghua University, Beijing 100084