| Автор | Hiroshi Kamimura |
| Автор | Kazushi Nomura |
| Автор | Akihiro Sano |
| Дата выпуска | 1998-12-14 |
| dc.description | By reviewing the first-principles studies of the many-electron electronic structures of underdoped and performed by Kamimura and co-workers, unusual electronic states are clarified. That is, the dopant holes move coherently by taking the Zhang-Rice spin singlet and Hund's coupling spin triplet alternately in the spin-correlated region of antiferromagnetic ordering due to the Cu localized spins, without destroying the antiferromagnetic order. This creates a metallic state which leads to superconductivity. The coexistence of (i) the antiferromagnetic spin ordering and (ii) the ordering in the appearance of the Zhang-Rice singlet and the Hund's coupling triplet results in the small Fermi surface for a carrier system and also leads to the decrease in the electronic entropy below a certain temperature at which the Fermi surface changes from a larger one to smaller ones. This is the microscopic origin of the pseudogap, the concept of which was originally proposed by Loram and co-workers in terms of the Fermi liquid picture. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Theory of high-temperature superconductivity in underdoped cuprates; the unusual electronic structure and the origin of the pseudogap |
| Тип | paper |
| DOI | 10.1088/0953-8984/10/49/023 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 10 |
| Первая страница | 11345 |
| Последняя страница | 11364 |
| Аффилиация | Hiroshi Kamimura; Institute of Physics, Graduate School of Science, Science University of Tokyo, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan |
| Аффилиация | Kazushi Nomura; Institute of Physics, Graduate School of Science, Science University of Tokyo, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan |
| Аффилиация | Akihiro Sano; Institute of Physics, Graduate School of Science, Science University of Tokyo, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan |
| Выпуск | 49 |
