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

M. M. Korshunov, V. A. Gavrichkov, S. G. Ovchinnikov, Z. V. Pchelkina, I. A. Nekrasov, M. A. Korotin, V. I. Anisimov

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

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 CuO 2 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-Tc cuprates in the framework of effective models.

Original languageEnglish
Pages (from-to)559-565
Number of pages7
JournalJournal of Experimental and Theoretical Physics
Volume99
Issue number3
DOIs
Publication statusPublished - Sep 2004
Externally publishedYes

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