Effect of short antiferromagnetic correlations on the normal and superconducting properties in copper oxides

Описание

Тип публикации: статья из журнала (материалы конференций, опубликованные в журналах)

Год издания: 2011

Идентификатор DOI: 10.4028/www.scientific.net/SSP.168-169.561

Ключевые слова: High temperature superconductivity, Short range antiferromagnetic order, Strong electron correlations, Antiferromagnetic materials, Antiferromagnetism, Copper oxides, Electron correlations, Electron density measurement, Antiferromagnetism, Electron correlations, Ab initio, Antiferromagnetic correlations, Cuprates, High-T, High-temperature superconductivity, Hubbard, Low energies, Multiband model, Short range antiferromagnetic order, Strong electron correlations, Superconducting properties, t-J models, Antiferromagnetic orderings, Superconductivity, Copper oxides, high temperature superconductivity

Аннотация: 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- Tc cuprates. The conventional LDA (local density approximation) approach to the band structure fails in the rПоказать полностьюegime of SEC. Various realistic multiband models of a CuO2 layer at low energy result in the effective Hubbard or t - J models [3-7]. The hybrid LDA+GTB scheme [8] generates the low-energy effective t - t? - t? - J* model with all parameters calculated ab initio.

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Издание

Журнал: Diffusion and Defect Data Pt.B: Solid State Phenomena

Выпуск журнала: Vol. 168-169

Номера страниц: 561-566

Издатель: Trans Tech Publications Ltd

Авторы

  • Ovchinnikov S.G. (Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences; Siberian Federal University)
  • Korshunov M.M. (Department of Physics,University of Florida)
  • Shneyder E.I. (Reshetnev Siberian Aerospace University)

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