| Автор | Th Pruschke |
| Автор | Q Qin |
| Автор | Th Obermeier |
| Автор | J Keller |
| Дата выпуска | 1996-04-29 |
| dc.description | We present a theory for the spin correlation function of the t - J model in the framework of the dynamical mean-field theory. Using this mapping between the lattice and a local model we are able to obtain an intuitive expression for the nonlocal spin susceptibility, with the corresponding local correlation function as input. The latter is calculated by means of local Goldstone diagrams following closely the procedures developed and successfully applied for the (single-impurity) Anderson model. We present a systematic study of the magnetic susceptibility and compare our results with those of a Hubbard model at large U. Similarities and differences are pointed out and the magnetic phase diagram of the t - J model is discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Magnetic properties of the t - J model in the dynamical mean-field theory |
| Тип | paper |
| DOI | 10.1088/0953-8984/8/18/009 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | 3161 |
| Последняя страница | 3175 |
| Аффилиация | Th Pruschke; Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany |
| Аффилиация | Q Qin; Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany |
| Аффилиация | Th Obermeier; Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany |
| Аффилиация | J Keller; Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany |
| Выпуск | 18 |
