| Автор | D I Golosov |
| Автор | A E Ruckenstein |
| Автор | M L Horbach |
| Дата выпуска | 1998-04-20 |
| dc.description | We study correlation effects in a three-band extended Hubbard model of Cu - O planes within the 1/N mean field approach in the infinite U limit. We investigate the emerging phase diagram and discuss the low energy scales associated with each region. With increasing direct overlap between oxygen orbitals, , the solution displays a band crossing which, for an extended range of parameters, lies close to the Fermi level. In turn this leads to the nearly nested character of the Fermi surface and the resulting linear temperature dependence of the quasi-particle relaxation rate for sufficiently large T. We also discuss the effect of band crossing on the optical conductivity and comment on the possible experimental relevance of our findings. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Band crossing and novel low-energy behaviour in a mean field theory of a three-band model on a Cu - O lattice |
| Тип | lett |
| DOI | 10.1088/0953-8984/10/15/001 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 10 |
| Первая страница | L229 |
| Последняя страница | L237 |
| Аффилиация | D I Golosov; Department of Physics, Rutgers University, Piscataway, NJ 08855-0849, USA |
| Аффилиация | A E Ruckenstein; Department of Physics, Rutgers University, Piscataway, NJ 08855-0849, USA |
| Аффилиация | M L Horbach; Department of Physics, Rutgers University, Piscataway, NJ 08855-0849, USA |
| Выпуск | 15 |
