QuantumATK Forum

General => Gallery => Topic started by: nori on April 26, 2010, 02:14

Title: Voltage drop calculated with ATK-SE 2010.02
Post by: nori on April 26, 2010, 02:14

I give the examples of voltage drop calculated with ATK-SE 2010.02 in this thread.
As you know, how to calculate Hartree potential is changed in new ATK (since 2009.06),
where Hartree potential is calculated against only central region, while in ATK 2008.10 it is calculated against whole system(left electrode + central region + right electrode).

This change bring mainly two benefits as follows:
1. New method makes SCF convergence more stable,
2. more reliable voltage drop can be obtained.

"more reliable" means that voltage drop mainly occurs around high resistance region like molecule, insulator, interface, and so-on, and is smoothly connected to reservoirs.

Title: Re: Voltage drop calculated with ATK-SE 2010.02
Post by: nori on April 26, 2010, 02:15

Another one is here.
Besides it, you can find the beautiful voltage drop at http://arxiv.org/abs/1004.2812 (http://arxiv.org/abs/1004.2812).

Title: Re: Voltage drop calculated with ATK-SE 2010.02
Post by: hkuieagle on May 15, 2010, 16:38

Beautiful pictures! Which tool did you use to plot?

Title: Re: Voltage drop calculated with ATK-SE 2010.02
Post by: nori on May 16, 2010, 12:41

Thank you for your comment  :)

I used VNL 2010.02 for the left side of the pictures and Excel for the right side of the pictures.