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Title: Complex Orbitals, Multiple Local Minima, and Symmetry Breaking in Perdew–Zunger Self-Interaction Corrected Density Functional Theory Calculations

Journal Article · · Journal of Chemical Theory and Computation
 [1];  [2];  [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
  2. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
  3. Univ. of Iceland, Reykjavík (Iceland); Aalto Univ., Espoo (Finland). Dept. of Applied Physics

Implentation of seminumerical stability analysis for calculations using the Perdew-Zunger self-interaction correction is described. It is shown that real-valued solutions of the Perdew-Zunger equations for gas phase atoms are unstable with respect to imaginary orbital rotations, confirming that a proper implementation of the correction requires complex-valued orbitals. The orbital density dependence of the self-interaction corrected functional is found to lead to multiple local minima in the case of the acrylic acid, H6, and benzene molecules. Finally, in the case of benzene, symmetry breaking that results in incorrect ground state geometry is found to occur, erroneously leading to alternating bond lengths in the molecule.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1478340
Journal Information:
Journal of Chemical Theory and Computation, Vol. 12, Issue 7; ISSN 1549-9618
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

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Cited By (13)

Interpretation and Automatic Generation of Fermi‐Orbital Descriptors journal September 2019
The diamine cation is not a chemical example where density functional theory fails journal November 2018
Stretched or noded orbital densities and self-interaction correction in density functional theory journal May 2019
An Overview of Self-Consistent Field Calculations Within Finite Basis Sets journal March 2020
A step in the direction of resolving the paradox of Perdew-Zunger self-interaction correction journal December 2019
Fully numerical Hartree‐Fock and density functional calculations. II. Diatomic molecules journal April 2019
Fermi-Löwdin orbital self-interaction corrected density functional theory: Ionization potentials and enthalpies of formation: Fermi-Löwdin Orbital Self-interaction Corrected Density Functional Theory: Ionization Potentials and Enthalpies of Formation journal October 2018
Fully numerical Hartree‐Fock and density functional calculations. I. Atoms journal April 2019
Analytic atomic gradients in the fermi-löwdin orbital self-interaction correction: Analytic Atomic Gradients in the Fermi-Löwdin Orbital Self-Interaction Correction journal December 2018
Fully numerical Hartree-Fock and density functional calculations. I. Atoms text January 2018
Fully numerical Hartree-Fock and density functional calculations. II. Diatomic molecules text January 2018
The Diamine Cation Is Not a Chemical Example Where Density Functional Theory Fails text January 2018
An overview of self-consistent field calculations within finite basis sets text January 2019

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