| Автор | Michele Cini |
| Автор | Adalberto Balzarotti |
| Дата выпуска | 1996-04-22 |
| dc.description | We propose a configuration interaction mechanism that leads to hole pairs with zero repulsion energy which are exact eigenstates of the two-band Hubbard Hamiltonian. The two-hole pairs have symmetry and arise from degenerate states at the Fermi level; we show that they must exist independently of the band filling. To discuss the possible relevance of these states to the problem of pairing in high- superconductors we solve five- and nine-site model clusters with four holes. The quasiparticles become dressed by the interaction with the background holes and get paired with a set of valence band parameters well established for high- cuprates. We predict a number of important experimental facts such as binding energies of the correct order of magnitude, the symmetry of the order parameter and the singlet - triplet energy separation of the Cooper pairs. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Two-hole quasiparticles and pairing in the Hubbard model of high- superconducting cuprates |
| Тип | lett |
| DOI | 10.1088/0953-8984/8/17/003 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | L265 |
| Последняя страница | L269 |
| Аффилиация | Michele Cini; INFM, Dipartimento di Fisica, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 1-00133 Roma, Italy |
| Аффилиация | Adalberto Balzarotti; INFM, Dipartimento di Fisica, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 1-00133 Roma, Italy |
| Выпуск | 17 |
