Dynamical properties of two-band superlattices with strong interband coupling in real space under the action of ac and dc-ac fields |
| |
引用本文: | 段素青,王志刚,赵宪庚.Dynamical properties of two-band superlattices with strong interband coupling in real space under the action of ac and dc-ac fields[J].中国物理 B,2003,12(8):899-904. |
| |
作者姓名: | 段素青 王志刚 赵宪庚 |
| |
作者单位: | Institute of Applied Physics and Computational Mathematics, P O Box 8009(26), Beijing 100088, China |
| |
基金项目: | Project supported by the National Natural Science Foundation of China (Grant No 10274007), and a grant of the China Academy of Engineering and Physics. |
| |
摘 要: | Within a two-band tight-binding model driven by ac and dc-ac electric fields, using numerical methods, we investigate the dynamics of electrons and the quasi-energy spectrum of the system with strong interband coupling in real space. We find that when the bandwidth is suppressed to a value much smaller than the field frequency, the dynamical localization can exist in the system. The corresponding regions are found for the occurrence of dynamical localization in the parameter space.
|
关 键 词: | 动力学 准能谱 超晶格 强耦合 带隙 |
收稿时间: | 2002-12-20 |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|