Effect of Short Antiferromagnetic Correlations on the Normal and Superconducting Properties in Copper Oxides

Abstract:

The abnormal “normal” state and origin of high temperature superconductivity in cuprates are still not clear [1, 2]. The strong electron correlations (SEC) are known to be one of the main difficulties for the theory of high- cuprates. The conventional LDA (local density approximation) approach to the band structure fails in the regime of SEC. Various realistic multiband models of a layer at low energy result in the effective Hubbard or models [3 7]. The hybrid LDA+GTB scheme [8] generates the low-energy effective model with all parameters calculated ab initio.

• Periodical: Solid State Phenomena (Volumes 168-169)
• Pages: 561-566
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.168-169.561
• Online since: December 2010
• Authors: S.G. Ovchinnikov, M.M. Korshunov, E.I. Shneyder
• Keywords: High Temperature Superconductivity, Short Range Antiferromagnetic Order, Strong Electron Correlations

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