The reason is that you "attach" a truly bulk semi-infinite electrode to your scattering region. When you do this you want the difference between the actual bulk electrode and the scattering region electrode to be minimized. A minimization occurs when the scattering part (non-lead) is fully screened.
The number of layers is easily found by converging the number of layers until the output remains unchanged. 2015-08-25 19:21 GMT+00:00 azar ostovan <[email protected]>: > Dear transiesta users > > I know it is very common to add some part of the lead into scattering > region, but how much is need? > > Is there any property I could follow to find the best size? > > > > Kind regards > Azar > -- Kind regards Nick
