Energy structure of high-temperature superconductors with the intersite Coulomb interaction


Тип публикации: статья из журнала

Год издания: 2009

Идентификатор DOI: 10.1140/epjb/e2009-00141-4

Ключевые слова: 71.27.+a Strongly correlated electron systems; heavy fermions, 71.28.+d Narrow-band systems; intermediate-valence solids, 74.72.-h Cuprate superconductors, 71.27.+a Strongly correlated electron systems heavy fermions, 71.28.+d Narrow-band systems intermediate-valence solids, Emery model, Energy structures, Fermi state, Integrated density, Root mean squares, Spectral intensity, Copper compounds, Corundum, Coulomb interactions, Electrons, Fermions, High temperature superconductors, Oxide superconductors, Superconductivity

Аннотация: The effect of the intersite Coulomb interaction of fermions on the ground state and energy structure of high-temperature superconductors is considered within the three-band Emery model using an extended basis of the irreducible operators orthogonal on Mori. The proposed theory allows prediction of bands of the fluctuation states whПоказать полностьюose spectral intensity grows with an increase in the root-mean-square fluctuations of the occupation numbers. The increase in these fluctuations in high-temperature superconductors upon doping plays a key role in redistribution of the integrated density of the Fermi states.

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Выпуск журнала: Vol. 69, Is. 2

Номера страниц: 219-227

ISSN журнала: 14346028

Место издания: NEW YORK

Издатель: SPRINGER