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, Ab initio, Antiferromagnetic correlations, Cuprates, High-T, High-temperature superconductivity, Hubbard, Low energies, Multiband model, Superconducting properties, t-J models, Antiferromagnetic orderings, 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.
Журнал: Diffusion and Defect Data Pt.B: Solid State Phenomena
Выпуск журнала: Vol. 168-169
Номера страниц: 561-566
Издатель: Trans Tech Publications Ltd