QuantumATK Forum
QuantumATK => Scripts, Tutorials and Applications => Topic started by: techenthusiast on May 17, 2024, 17:06
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Good evening, Hope you are doing well. Just to ask :
How to give proper metallic contact to source & drain in quantum atk . It's showing "Spatial regions extending into the electrodes are ignored during the electrode calculation"
Just to ask
:how to avoid or solve " spatial region extended into the centre region, not calculated during electrode calculation in quantum atk"
Thank you
How to put proper dielectric & metal exactly at the centre region of the device?
Kindly let me know. Thank you.
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Spatial regions are not supposed to be contacts, since they will not be able to conduct hold any current. They are only meant to be used for electrostatic control, like gates. Your source and drain need to be fully atomistic structures which are part of the DFT-NEGF calculation.
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Thank You for your prompt response. One small doubt is that -
In this example ( https://docs.quantumatk.com/tutorials/ivcharacteristics/ivcharacteristics.html ) we can visualize the explanation for two sided [top, bottom] gate & dielectric
But the procedure for IV study for cylindrical wrap around gate is similar to this? or maybe different or maybe do-able with the same above tutorials
(https://docs.quantumatk.com/manual/Types/IVCharacteristics/IVCharacteristics.html#usage-example)
Kindly advise. Thank You very much once again.
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The IVCharacteristics framework is handy since it is restartable and provides a nice way to loop over all bias values and gate voltages. If you have multiple gates or a more complex system I recommend just running individual simulations or a script with a loop over values, and then collect the results in the end.