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LDA orbitals and pseudopotential requirements (availabel LDA pseudopotentials)

Open Shen-Zhen-Xiong opened this issue 9 months ago • 3 comments

Background

ABACUS is a general-purpose software that supports various types of pseudopotentials. However, at present, it still lacks complete LDA pseudopotentials and orbitals. In a magnetic system, considering the calculation accuracy, people usually compare which one is more appropriate between LDA and PBE. It is hoped that ABACUS can add LDA pseudopotentials and orbitals to the official database.

Describe the solution you'd like

Add standard LDA pseudopotentials and orbitals to the official database.

Shen-Zhen-Xiong avatar Apr 07 '25 01:04 Shen-Zhen-Xiong

This would be a systematic task, here I upload two groups of LDA pseudopotentials I collected: PZ: NCPP-SG15-PZLDA.zip PW: NCPP-FHI-PWLDA.zip Then I will do the efficiency tests on those pseudopotentials.

kirk0830 avatar Apr 07 '25 03:04 kirk0830

I hope we will have LCAO orbitals for LDA pseudopotentials later.

mohanchen avatar Apr 08 '25 01:04 mohanchen

@Shen-Zhen-Xiong I cannot understand the necessity of LDA pseudopotentials & orbitals. in quantum chemistry calculation, the pseudopotentials and orbitals are fixed after generated (often refer to HF result) and have no dependency with the specific functional. I know that sometimes LDA fits the experimental results better than PBE in some materials, but we do use PBE pseudopotentials & orbitals for meta-GGA and HSE06 calculation, so why LDA PP&ORB necessary for LDA calculation ?

QuantumMisaka avatar Apr 08 '25 03:04 QuantumMisaka