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Träfflista för sökning "WFRF:(Hedin Ulf) srt2:(1972-1979)"

Search: WFRF:(Hedin Ulf) > (1972-1979)

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1.
  • von Barth, Ulf, et al. (author)
  • A local exchange-correlation potential for the spin polarized case: I
  • 1972
  • In: Journal of Physics C: Solid State Physics. ; 5:13, s. 1629-1642
  • Journal article (peer-reviewed)abstract
    • The local density theory is developed by Hohenberg, Kohn and Sham is extended to the spin polarized case. A spin dependent one- electron potential pertinent to ground state properties is obtained from calculations of the total energy per electron made with a `bubble' (or random phase) type of dielectric function. The potential is found to be well represented by an analytic expression corresponding to a shifted and rescaled spin dependent Slater potential. To test this potential the momentum dependent spin susceptibility of an electron gas is calculated. The results compare favourably with available information from other calculations and from experiment. The potential obtained in this paper should be useful for split band calculations of magnetic materials.
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2.
  • von Barth, Ulf, et al. (author)
  • Correlated crystal potentials in band structure calculations
  • 1974
  • In: Il Nouvo Cimento B. ; 23:1, s. 1-14
  • Journal article (peer-reviewed)abstract
    • The authors give a critical discussion of different current band structure schemes and their relaxation to experiment. They then discuss the connections, exact and approximate, that exist between the electron self-energy and experiment, considering in particular optical absorption and photoemission. Different computationally feasible approximation schemes based on a dynamic generalization of the nonlocal Hartree-Fock exchange potential are considered.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Hedin, Lars (2)
von Barth, Ulf (2)
University
Lund University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)

Year

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