Theory of X-Ray Absorption Spectra of Strongly Correlated Copper Oxides Научная публикация
Журнал |
Physica C: Superconductivity and its Applications
ISSN: 0921-4534 , E-ISSN: 1873-2143 |
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Вых. Данные | Год: 1997, Том: 278, Номер: 1-2, Страницы: 94-106 Страниц : 13 DOI: 10.1016/S0921-4534(97)00086-5 | ||||
Ключевые слова | Electron correlations, p-d model, X-ray absorption spectra | ||||
Авторы |
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Организации |
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Информация о финансировании (2)
1 | Правительство Российской Федерации | 95027 |
2 | Красноярский краевой фонд поддержки научной и научно-технической деятельности | 5F0009 |
Реферат:
It has been shown that theoretical X-ray absorption spectra of highly correlated systems can be presented as a product of a single-electron part obtained by the self-consistent field Xα-scattered wave (SCFXα-SW) method, and of a multi-electron part obtained by exact diagonalization of the Hamiltonian of the multi-band multi-electron p-d model. Using that model, the influence of strong correlation effects on the Cu K- and CuL2,3-spectra of La2−xSrxCuO4 (x = 0, 0.2, 1) has been studied. In terms of that model, the main peak of the Cu K-spectrum for x = 0 was assigned to the Cud10L-configuration and only one satellite was assigned to the Cud9-configuration. Comparison of the theoretical with the experimental data shows that the ground state of the two-holes in the CuO4 cell is triplet. In that case additional satellites of Cud9L- and Cud8-configurations are observed. The same conclusions have been made concerning polarized CuL2,3-spectra for the fully doped LaSrCuO4 excluding the peak with the energy 2.8 eV above the threshold, which was assigned to the transitions into quasi-stationary states due to existence of a high barrier in the Cud-state Hartree-Fock potential.
Библиографическая ссылка:
Avramov P.V.
, Ovchinnikov S.G.
, Gavrichkov V.A.
, Ruzankin S.P.
Theory of X-Ray Absorption Spectra of Strongly Correlated Copper Oxides
Physica C: Superconductivity and its Applications. 1997. V.278. N1-2. P.94-106. DOI: 10.1016/S0921-4534(97)00086-5 WOS Scopus РИНЦ
Theory of X-Ray Absorption Spectra of Strongly Correlated Copper Oxides
Physica C: Superconductivity and its Applications. 1997. V.278. N1-2. P.94-106. DOI: 10.1016/S0921-4534(97)00086-5 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 27 янв. 1997 г. |
Опубликована в печати: | 20 апр. 1997 г. |
Опубликована online: | 19 мая 1998 г. |
Идентификаторы БД:
Web of science | WOS:A1997XB79300013 |
Scopus | 2-s2.0-0031117023 |
РИНЦ | 13259116 |
Chemical Abstracts | 1997:343972 |
Chemical Abstracts (print) | 127:115784 |
OpenAlex | W2005731523 |