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Journal of Experimental and Theoretical Physics

, Volume 107, Issue 4, pp 649–652 | Cite as

Pseudogap value in the energy spectrum of LaOFeAs: a fixed spin moment treatment

  • M. A. KorotinEmail author
  • S. V. Streltsov
  • A. O. Shorikov
  • V. I. Anisimov
Order, Disorder, and Phase Transition in Condensed Systems

Abstract

The experimental data available to date in the literature corresponding to the paramagnetic-spin density wave transition in nonsuperconducting LaOFeAs are discussed. In particular, we note that a relative decrease in the density of states on the Fermi level and formation of a pseudogap occur upon a spin density wave transition. The values of these quantities are not properly described in density functional theory. The agreement with experimental estimations becomes more accurate with the use of a fixed spin moment procedure when the iron spin moment is set to m experimental value. Strong electron correlations that are not included m the present calculation scheme may lead both to a decrease in the spin moment and to a renormalization of the energy spectrum in the vicinity of the Fermi level for correct description of the discussed characteristics.

PACS numbers

71.15.Mb 74.25.Jb 

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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • M. A. Korotin
    • 1
    Email author
  • S. V. Streltsov
    • 1
  • A. O. Shorikov
    • 1
  • V. I. Anisimov
    • 1
  1. 1.Institute of Metal PhysicsRussian Academy of SciencesYekaterinburgRussia

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