Hi Joe,
Sorry, I have to take back my words about unusual asymmetry of the
current. It was caused by a real asymmetry of my geometry. I have
checked that summing modes of lead 0 leads to the same (but opposite)
current, as summing modes of lead 1.
Thank you so much for your help!
Best wishes,
Sergey
On 19/10/18 14:51, Joseph Weston wrote:
Hi Sergey,
Also, I found that current asymmetry was indeed there and it was
caused by numerical errors: the precision of the current calculation
is higher near the lead for which it is calculated, while the error
may grow significant near other lead(s). In my case, at some
energies it is symmetric, at some - not.
This is very surprising; do you think that this could be a bug in Kwant?
Can you share a simple script that reproduces this issue (the simpler
the better; that way it's easy to debug)?
Thanks,
Joe
