| Автор | Hiroaki Kusunose |
| Дата выпуска | 2009-03-01 |
| dc.description | An effect of antiferromagnetic fluctuations on single-particle excitations is examined on the basis of an extended dynamical mean-field theory that takes account of long-range spin fluctuations onto the local self energy. We demonstrate that the single-particle spectral intensity in the two-dimensional Hubbard model at half-filling exhibits the pseudo-gap behavior near the Fermi energy due to the critical antiferromagnetic fluctuations. We also show that for the symmetric case in the Anderson lattice model, the hybridized-band gap is enlarged by the antiferromagnetic fluctuations. In both models the antiferromagnetic fluctuations suppress the double occupancy of the correlated electrons. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2009 IOP Publishing Ltd |
| Название | Effect of antiferromagnetic correlation to single-particle excitations in strongly correlated electron systems |
| Тип | paper |
| DOI | 10.1088/1742-6596/150/4/042105 |
| Electronic ISSN | 1742-6596 |
| Print ISSN | 1742-6588 |
| Журнал | Journal of Physics: Conference Series |
| Том | 150 |
| Первая страница | 42105 |
| Последняя страница | 42108 |
| Аффилиация | Hiroaki Kusunose; Department of Physics, Ehime University, Matsuyama 790–8577, Japan |
| Выпуск | 4 |
