| Автор | M. Ulmke |
| Автор | P. J. H. Denteneer |
| Автор | R. T. Scalettar |
| Автор | G. T. Zimanyi |
| Дата выпуска | 1998-06-15 |
| dc.description | The two-dimensional Hubbard model with a bimodal distribution of on-site interactions, P(U<sub>i</sub>) = (1 − f)δ(U<sub>i</sub> − U) + fδ(U<sub>i</sub>), is studied using finite-temperature Quantum Monte Carlo and dynamical mean-field theory. Long-range antiferromagnetic order off half-filling is stabilized by the disorder, due to localization of the dopants on the U = 0 sites. Whereas in the clean model there is a single gap at n = 1, for nonzero f we find the compressibility and density of states exhibit gaps at two separate fillings. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 1998 EDP Sciences |
| Название | Enhancement of long-range antiferromagnetic order by nonmagnetic impurities in the Hubbard model |
| Тип | lett |
| DOI | 10.1209/epl/i1998-00301-2 |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 42 |
| Первая страница | 655 |
| Последняя страница | 660 |
| Выпуск | 6 |
