Dear Amrita,
Yes, you can add the two builders as follows:
left_lead1+=left_lead2
but in the new version of kwant, the operator += for builders is
deprecated. So, you better use:
left_lead1.update(left_lead2)
and then you add your missing hopping, before you attach the lead:
left_lead1[(lat(0,0)
Dear Amrita,
This is a normal result: your two systems are different. In fact, if you
zoom on your left lead you will see that the upper and the bottom parts of
your lead do not communicate. There are hoppings missing and thus the two
situations are not the same. (check the enclosed figure).
I ho
