Quantum Phase Transitions and Superconductivity in Single- and Two-Layer Cuprates in the Multiband Theory of Hubbard Fermions

Описание

Тип публикации: статья из журнала

Год издания: 2013

Идентификатор DOI: 10.1007/s10948-013-2144-1

Ключевые слова: Strong electron correlations, Fermi surface reconstruction, Fermi surface reconstruction, Strong electron correlations, Concentration region, Doping dependence, Electronic instabilities, Phonon mechanism, Quantum phase transitions, Strong electron correlations, Superconducting properties, Superconducting state, Calculations, Fermi surface, Superconductivity, Phase transitions

Аннотация: We consider the doping dependence of the normal and superconducting properties of La2Sr2-xCuO2 and YBa2Cu3O7 in the low energy effective model based on the ab initio LDA+GTB calculations. With doping we have found a concentration region with electronic instability of the uniform state. We have shown that two quantum phase transitioПоказать полностьюns (QPT) of the Lifshitz type correspond well to the experimental phase diagram. For superconducting state we have considered both magnetic and phonon mechanisms of pairing.

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Издание

Журнал: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM

Выпуск журнала: Vol. 26, Is. 8

Номера страниц: 2607-2609

ISSN журнала: 15571939

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Ovchinnikov S.G. (Reshetnev Siberian State Aerospace University)
  • Korshunov M.M. (Siberian Federal University)
  • Makarov I.A. (Reshetnev Siberian State Aerospace University)
  • Shneyder E.I. (Reshetnev Siberian State Aerospace University)

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