|
|
|
Dynamical behaviors of an exciton in an asymmetric double coupled quantum dot |
| LIU Can-de1, LIU Wen2, SU Xi-yu2, LI Feng-ling3, WU Da-peng4 |
| 1.School of Transportation and Vehicle Engineering, Shan Dong University of Technology, Zibo, Shandong 255049, China; 2.Department of Physics, Qufu Normal University, Qufu, Shandong 273165, China; 3.No. 1 Middle School, Zichuan, Zibo, Shandong 255100, China; 4.No. 1 Middle School, Chengyang, Qingdao, Shandong 266108, China; |
|
|
|
|
Abstract Dynamical behaviors of an exciton in an asymmetric double coupled quantum dot and an alternatingcurrent (ac) electric field have been analyzed based on the two-level approximation theory, and the conditions under which dynamical localization occurs are obtained. It shows that when the amplitude of the ac electric field is small, the Coulomb interaction plays an important role. The dynamical behaviors of the exciton are mainly confined in the low-level subspace. When the ratio of the field intensity to frequency is the root of Bessel function, electron and hole are localized in one dot, and they can be divided with the increasing amplitude of the ac electric field.
|
|
Issue Date: 05 June 2006
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
