A nonlocal correlation energy density functional based on the approximation of a model Coulomb hole is presented. The functional is constructed to describe both the homogeneous electron gas and nonuniform systems. In the nonuniform case, the functional satisfies all uniform, as well as most nonunifo
Correlation energies of diatomics obtained with a nonlocal density functional
β Scribed by T.N. Zolotukhina; I.K. Dmitrieva
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 387 KB
- Volume
- 174
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Nonlocal contributions to the correlation energy for diatomics are studied. We find a linear dependence on the number of electrons for small molecules when considering the Thomas-Fermi model. A linear dependence of a nonlocal contribution to correlation energy of diatomics on internuclear distance is revealed, and this relation is shown to be a consequence of the oneconfiguration HF approach.
π SIMILAR VOLUMES
We present in this work self-consistent density functional theory DFT calculations on atomic electron affinities performed with nonlocal exchange and a local Coulomb correlation functionals. The exchange functionals are the weighted spin-density Ε½ . Ε½ . approximation WSDA symmetrized following the i
Eq. ( 12) on p. 421 is incorrect and should instead read ## 1 ~ (v~. v~,~) tsrr = -8 i J ;i; ] -~ " (1) All the results reported in the Letter were obtained using the correct expression (1). ## The missing footnote b to Table 5 on p. 425 is "This is a revised equilibrium geometry of C2H 4 repo
The more stable isomers obtained by protonation of both cyclic and open-chain forms of Ε½ . ozone O were studied by the linear combination of Gaussian-type orbitalsαdensity 3 Ε½ . functional LCGTOαDF method. Features of the first-order saddle points connecting them were also investigated. Nonlocal cor