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Journal of Experimental and Theoretical Physics

, Volume 99, Issue 3, pp 559–565 | Cite as

Parameters of the effective singlet-triplet model for band structure of high-T c cuprates by alternative approaches

  • M. Korshunov
  • A. Gavrichkov
  • S. G. Ovchinnikov
  • Z. V. Pchelkina
  • I. A. Nekrasov
  • M. A. Korotin
  • V. I. Anisimov
Solids Electronic Properties

Abstract

We consider the problem of determining the parameters for high-T c superconducting copper oxides. Alternative approaches, the ab initio LDA and LDA + U calculations and the generalized tight-binding (GTB) method for strongly correlated electron systems, are used to calculate hopping and exchange parameters of the effective singlet-triplet model for the CuO2 layer. The resulting parameters are in remarkably good agreement with each other and with parameters extracted from experiment. This set of parameters is proposed for proper quantitative description of the physics of hole-doped high-T c cuprates in the framework of effective models.

Keywords

Oxide Copper Spectroscopy State Physics Field Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • M. Korshunov
    • 1
  • A. Gavrichkov
    • 1
  • S. G. Ovchinnikov
    • 1
  • Z. V. Pchelkina
    • 2
  • I. A. Nekrasov
    • 2
  • M. A. Korotin
    • 2
  • V. I. Anisimov
    • 2
  1. 1.Kirensky Institute of Physics, Siberian DivisionRussian Academy of SciencesKrasnoyarskRussia
  2. 2.Institute of Metal Physics, Ural DivisionRussian Academy of SciencesEkaterinburgRussia

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