Exotic superconductivity and magnetism in ruthenates

S.G. Ovchinnikov
Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Academgorodok 50, str. 38, Krasnoyarsk, 660036, Russian Federation

Basic experimental and theoretical results on ruthenates and rutheno-cuprates are reviewed. The electronic structure of various ruthenates and exotic superconductivity in Sr₂RuO₄ with spin-triplet pairing are described. The complex phase diagram of Ca_2-xSr_xRuO₄, involving competing magnetic phases and metal-insulator transitions, is described, as are the exotic magnetic properties of Sr₃Ru₂O₇ and of the double perovskite Sr₂YRuO₆, and the coexistence of superconductivity and magnetism in the rutheno-cuprate RuSr₂GdCu₂O₈. Possible applications of Sr₂RuO₄ and SrRuO₃ are considered. The effect of strong electron correlations is discussed, and the properties of ruthenates and cuprates are compared.

PACS: 71.21.+a, 74.25.Jb, 74.70.Pq (all)
DOI: 10.1070/PU2003v046n01ABEH001235
URL: https://ufn.ru/en/articles/2003/1/b/
Web of Science

000183153400002
Citation: Ovchinnikov S G "Exotic superconductivity and magnetism in ruthenates" Phys. Usp. 46 21–44 (2003)

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Оригинал: Овчинников С Г «Экзотическая сверхпроводимость и магнетизм в рутенатах.» УФН 173 27–50 (2003); DOI: 10.3367/UFNr.0173.200301b.0027

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