| Автор | Xiao-Dun Jing |
| Автор | Zhao-Qing Zhang |
| Дата выпуска | 1989-11-13 |
| dc.description | The density of states for a tight-binding electron in disordered coupled chains with a weak Gaussian diagonal randomness is simulated using Dean's method under various magnetic fields. These data are compared with the results of the coherent-potential approximation (CPA) based on the analytic Green function obtained recently by the present authors. The CPA is shown to give quantitatively good results except in the near-tail regions. The scaling behaviour near the band edges (including the near-tail regions) are also examined in detail. It is found that, when the magnetic field is above a critical field scaling exists and follows the one-dimensional universal function. Below this critical field, a non-universal energy shift is required before scaling can apply. The existence of this energy shift also limits the range of scaling to a smaller randomness. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The density of states of disordered coupled chains in a magnetic field |
| Тип | paper |
| DOI | 10.1088/0953-8984/1/45/009 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 1 |
| Первая страница | 8841 |
| Последняя страница | 8850 |
| Аффилиация | Xiao-Dun Jing; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Аффилиация | Zhao-Qing Zhang; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Выпуск | 45 |
