The local-density functional (LDF) theory does not accurately predict the total energy and the orbital energy of an atom, because of the incomplete cancellation of the self-interaction in the Coulomb integral by that in the exchange integral. Recent investigations showed that the agreement of the to
Comment on the self-interaction correction to the local spin density exchange splitting
β Scribed by L. Kleinman; K. Mednick
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 133 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0038-1098
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π SIMILAR VOLUMES
Further evidence is shown that a kinetic energy functional can be used as an exchange energy functional and, conversely, exchange used as a kinetic energy functional, with a proper transformation of energy as a functional of the density. We have used functionals with two adjustable parameters to det
The kinetic and the exchange energy functionals are expressed in the form T [ p ] = CTFj drp5/3(r)f.,(s) and K [ p ] = C,/drp4/3(r)fK(s), where C,, = (3/10)(3.rr2)2/3 and C , = -(3/4)(3/7~)'/~ are the Thomas-Fermi and the Dirac coefficients, respectively, and s = lVp(r)l/C, p4l3(r), with C, = 2 ( 3