Comparison study of exchange-correlation functionals on prediction of ground states and structural properties

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Abstract

Despite significant advances in first-principles calculation methods, there is no single exchange-correlation functional which predicts the ground state of materials without an error yet. We investigated how accurately ground states of binary semiconductors are described using 16 exchange-correlation functionals (with or without van der Waals corrections). LDA, PBEsol, SCAN (with or without rVV10 correction), and PBE with D3 van der Waals correction (zero or Becke-Johnson damping) show good predicting power. The lattice constants of stable phases were slightly better described by SCAN, PBEsol, PBE+D3 (Becke-Johnson damping), and MS2. We also propose a set of functionals to double-check the stability of new materials based on the majority vote.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalCurrent Applied Physics
Volume22
DOIs
StatePublished - Feb 2021
Externally publishedYes

Keywords

  • DFT
  • Exchange-correlation
  • Meta-GGA
  • Structure prediction
  • van der Waals correction

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