Results of high-T_c superconductivity studies are analyzed using the authors’ model, which assumes that the interaction of electrons with two-site negative-U centers (due to charged dopant localization near impurity ions) is responsible for many anomalous properties, and indeed the very superconductivity, of high-T _c superconductors. It is shown that the basic properties of high-T_c superconductors and the details of the superconducting and magnetic phase diagrams ofLa_2-xM_xCuO₄ (M=Ba, Sr) can be explained by this model.

PACS: 74.20.−z, 74.62.Dh, 74.72.−h (all) DOI: 10.1070/PU2004v047n05ABEH001384 URL: https://ufn.ru/en/articles/2004/5/c/ 000223553600003 2004PhyU...47..493M Citation: Mitsen K V, Ivanenko O M "Phase diagram of La2-xMxCuO4 as the key to understanding the nature of high-Tc superconductors" Phys. Usp. 47 493–510 (2004) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Мицен К В, Иваненко О М «Фазовая диаграмма La2–xMxCuO4 как ключ к пониманию природы ВТСП» УФН 174 545–563 (2004); DOI: 10.3367/UFNr.0174.200405c.0545