deepmodeling / deepmodeling/DeePTB

Clarification on HSE band structure workflow and training data in DeepTB

Open
#280 1 comment 0 reactions 1 assignee Claimed by @AsymmetryChou View on GitHub
Dominant language
Python
Stars
122
Forks
36
PR merge metrics
No merged PRs in 30d

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!

Contributor guide

Open the contributing guide

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.