| Автор | R. Côté |
| Автор | A. M. S. Tremblay |
| Дата выпуска | 1995-01-01 |
| dc.description | In the large-U limit, the ground state of the half-filled, nearest-neighbor Hubbard model on the triangular lattice is the three-sublattice antiferromagnet. In sharp contrast with the square-lattice case, where Goldstone modes never have a charge component, it is shown that beyond leading order in t/U the three Goldstone modes on the triangular lattice, at finite q, are a linear combination of spin and charge. This leads to non-vanishing conductivity at any finite frequency, even though the magnet remains insulating at zero frequency. More generally, non-collinear spin order should lead to such gapless insulating behavior. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Spiral Magnets as Gapless Mott Insulators |
| Тип | lett |
| DOI | 10.1209/0295-5075/29/1/007 |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 29 |
| Первая страница | 37 |
| Последняя страница | 42 |
| Аффилиация | R. Côté; Département de Physique and Centre de Recherche en Physique du Solide Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada |
| Аффилиация | A. M. S. Tremblay; Département de Physique and Centre de Recherche en Physique du Solide Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada |
| Выпуск | 1 |
