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A step in the direction of resolving the paradox of Perdew-Zunger self-interaction correction

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5129533· OSTI ID:1601995
Self-interaction (SI) error, which results when exchange-correlation contributions to the total energy are approximated, limits the reliability of many density functional approximations. The Perdew-Zunger SI correction (PZSIC), when applied in conjunction with the local spin density approximation (LSDA), improves the description of many properties, but generally, this improvement is limited. Here we introduce a modification to PZSIC that uses an iso-orbital indicator to identify regions where local SI corrections should be applied. Using this local-scaling SIC (LSIC) approach with LSDA, we analyze predictions for a wide range of properties including, for atoms, total energies, ionization potentials, and electron affinities, and for molecules, atomization energies, dissociation energy curves, reaction energies, and reaction barrier heights. LSIC preserves the results of PZSIC-LSDA for properties where it is successful and provides dramatic improvements for many of the other properties studied. Atomization energies calculated using LSIC are better than those of the Perdew, Burke, and Ernzerhof (PBE) generalized gradient approximation (GGA) and close to those obtained with the Strongly Constrained and Appropriately Normed (SCAN) meta-GGA. LSIC also restores the uniform gas limit for the exchange energy that is lost in PZSIC-LSDA. Further performance improvements may be obtained by an appropriate combination or modification of the local scaling factor and the particular density functional approximation.
Research Organization:
Central Michigan Univ., Mount Pleasant, MI (United States); Univ. of Texas at El Paso, TX (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
Contributing Organization:
Texas Advanced Computing Center
Grant/Contract Number:
SC0006818; SC0018331
OSTI ID:
1601995
Alternate ID(s):
OSTI ID: 1577220
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 21 Vol. 151; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

A step in the direction of resolving the paradox of Perdew–Zunger self-interaction correction. II. Gauge consistency of the energy density at three levels of approximation journal June 2020
Accurate and numerically efficient r$^2$SCAN meta-generalized gradient approximation preprint January 2020
Self-Interaction Correction in Water-Ion Clusters text January 2020
Importance of self-interaction-error removal in density functional calculations on water cluster anions journal January 2020
Importance of self-interaction-error removal in density functional calculations on water cluster anions text January 2020

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