CUPRATES, MANGANITES AND COBALTITES: MULTIELECTRON APPROACH TO THE BAND STRUCTURE

Описание

Тип публикации: статья из журнала

Год издания: 2012

Идентификатор DOI: 10.1142/S0217984912300165

Ключевые слова: LDA plus GTB method, strongly-correlated systems, band structure, band structure, LDA + GTB method, strongly-correlated systems

Аннотация: High-T-c superconductors with CuO2 layers, manganites La1-xSrxMnO3 and cobaltites LaCoO3 present several mysteries in their physical properties. Most of them are believed to come from the strongly-correlated nature of these materials. From the theoretical viewpoint, there are many hidden rocks in making the consistent description oПоказать полностьюf the band structure and low-energy physics starting from the Fermi-liquid approach. Here, we discuss the alternative method - multielectron approach to the electronic structure calculations for the Mott insulators - called LDA + GTB (local density approximation + generalized tight-binding) method. Its origin is a straightforward generalization of the Hubbard perturbation theory in the atomic limit and the multiband p - d Hamiltonian with the parameters calculated within LDA. We briefly discuss the method and focus on its applications to cuprates, manganites and cobaltites.

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Издание

Журнал: MODERN PHYSICS LETTERS B

Выпуск журнала: Vol. 26, Is. 24

ISSN журнала: 02179849

Место издания: SINGAPORE

Издатель: WORLD SCIENTIFIC PUBL CO PTE LTD

Авторы

  • Korshunov M.M. (Siberian Federal University)
  • Ovchinnikov S.G. (Siberian Federal University)
  • Shneyder E.I. (Reshetnev Siberian State Aerospace University)
  • Gavrichkov V.A. (Siberian Federal University)
  • Orlov Y.S. (Siberian Federal University)
  • Nekrasov I.A. (Institute for Electrophysics,Russian Academy of Sciences)
  • Pchelkina Z.V. (Institute for Metal Physics,Russian Academy of Sciences)

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