deepmodeling / deepmodeling/DeePTB
Clarification on HSE band structure workflow and training data in DeepTB
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- Python
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Description
### Details
Hello,
I have a question regarding HSE band structure calculations in DeepTB.
As we know, an HSE calculation usually involves two steps:
SCF (self-consistent field) calculation.
NSCF (non-self-consistent) calculation with zero-weighted k-points along the band path.
Since DeepTB uses the ABACUS input format, where the SCF calculation typically uses only a simple k-point mesh, I wanted to confirm whether it is reasonable to train the model using only the SCF data.
I tried training with data generated from the SCF step alone, but the resulting band structure is not accurate.
So my question is:
Should we perform both SCF and NSCF calculations (including the zero-weighted band path) before generating the DeepTB training data for HSE?
Or is there a specific recommended workflow for HSE-based band training in DeepTB?
Any guidance or examples on the correct setup for HSE training would be very helpful.
Thank you!
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