Purpose of Electrode Extension ???

[Shan]

Dear QW team,

When we build a two probe device... The device consists of electrode regions and electrode extension regions.

What is the purpose of this Electrode extension region ??
Is it to mitigate the effect of a practical contact ?

Please clarify.

[Ulrik G. Vej-Hansen]

Please see our description of the NEGF formalism here: https://docs.quantumwise.com/manual/NEGF.html
You may also consult then introductory tutorial on transport calculations i QuantumATK: https://docs.quantumwise.com/tutorials/atk_transport_calculations/atk_transport_calculations.html